ω-Carboxyaryl substituted diphenyl ureas as raf kinase inhibitors

ABSTRACT

This invention relates to the use of a group of aryl ureas in treating raf mediated diseases, and pharmaceutical compositions for use in such therapy.

CROSS-REFERENCE TO RELATED APPLICATIONS

This application is a 371 of PCT/US00/00648 filed Jan. 8, 2000, whichclaims the benefit of provisional application Ser. No. 60/115,877, filedJan. 13, 1999.

FIELD OF THE INVENTION

This invention relates to the use of a group of aryl ureas in treatingraf mediated diseases, and pharmaceutical compositions for use in suchtherapy.

BACKGROUND OF THE INVENTION

The p21^(ras) oncogene is a major contributor to the development andprogression of human solid cancers and is mutated in 30% of all humancancers (Bolton et al. Ann. Rep. Med. Chem. 1994, 29, 165-74; Bos.Cancer Res. 1989, 49, 4682-9). In its normal, umnutated form, the rasprotein is a key element of the signal transduction cascade directed bygrowth factor receptors in almost all tissues (Avruch et al. TrendsBiochem. Sci. 1994, 19, 279-83). Biochemically, ras is a guaninenucleotide binding protein, and cycling between a GTP-bound activatedand a GDP-bound resting form is strictly controlled by ras' endogenousGTPase activity and other regulatory proteins. In the ras mutants incancer cells, the endogenous GTPase activity is alleviated and,therefore, the protein delivers constitutive growth signals todownstream effectors such as the enzyme raf kinase. This leads to thecancerous growth of the cells which carry these mutants (Magnuson et al.Semin. Cancer Biol. 1994, 5, 247-53). It has been shown that inhibitingthe effect of active ras by inhibiting the raf kinase signaling pathwayby administration of deactivating antibodies to raf kinase or byco-expression of dominant negative raf kinase or dominant negative MEK,the substrate of raf kinase, leads to the reversion of transformed cellsto the normal growth phenotype (see: Daum et al. Trends Biochem. Sci.1994, 19, 474-80; Fridman et al. J. Biol. Chem. 1994, 269, 30105-8.Kolch et al. (Nature 1991, 349, 426-28) have further indicated thatinhibition of raf expression by antisense RNA blocks cell proliferationin membrane-associated oncogenes. Similarly, inhibition of raf kinase(by antisense oligodeoxynucleotides) has been correlated in vitro and invivo with inhibition of the growth of a variety of human tumor types(Monia et al., Nat. Med. 1996, 2, 668-75).

SUMMARY OF THE INVENTION

The present invention provides compounds which are inhibitors of theenzyme raf kinase. Since the enzyme is a downstream effector ofp21^(ras), the inhibitors are useful in pharmaceutical compositions forhuman or veterinary use where inhibition of the raf kinase pathway isindicated, e.g., in the treatment of tumors and/or cancerous cell growthmediated by raf kinase. In particular, the compounds are useful in thetreatment of human or animal solid cancers, e.g., murine cancer, sincethe progression of these cancers is dependent upon the ras proteinsignal transduction cascade and therefore susceptible to treatment byinterruption of the cascade, i.e., by inhibiting raf kinase.Accordingly, the compounds of the invention are useful in treatingcancers, including solid cancers, such as, for example, carcinomas(e.g., of the lungs, pancreas, thyroid, bladder or colon), myeloiddisorders (e.g., myeloid leukemia) or adenomas (e.g., villous colonadenoma).

The present invention therefore provides compounds generally describedas aryl ureas, including both aryl and heteroaryl analogues, whichinhibit the raf kinase pathway. The invention also provides a method fortreating a raf mediated disease state in humans or mammals. Thus, theinvention is directed to compounds which inhibit the enzyme raf kinaseand also compounds, compositions and methods for the treatment ofcancerous cell growth mediated by raf kinase wherein a compound ofFormula I is administered or pharmaceutically acceptable salt thereof.A—D—B  (I)

In formula I, D is —NH—C(O)—NH—,

A is a substituted moiety of up to 40 carbon atoms of the formula:—L—(M—L¹)_(q), where L is a 5 or 6 membered cyclic structure bounddirectly to D, L¹ comprises a substituted cyclic moiety having at least5 members, M is a bridging group having at least one atom, q is aninteger of from 1-3; and each cyclic structure of L and L¹ contains 0-4members of the group consisting of nitrogen, oxygen and sulfur, and

B is a substituted or unsubstituted, up to tricyclic aryl or heteroarylmoiety of up to 30 carbon atoms with at least one 6-member cyclicstructure bound directly to D containing 0-4 members of the groupconsisting of nitrogen, oxygen and sulfur,

wherein L¹ is substituted by at least one substituent selected from thegroup consisting of —SO₂R_(x), —C(O)R_(x), and —C(NR_(y))R_(z),

R_(y) is hydrogen or a carbon based moiety of up to 24 carbon atomsoptionally containing heteroatoms selected from N, S and O andoptionally halosubstituted, up to per halo,

R_(z) is hydrogen or a carbon based moiety of up to 30 carbon atomsoptionally containing heteroatoms selected from N, S and O andoptionally substituted by halogen, hydroxy and carbon based substituentsof up to 24 carbon atoms, which optionally contain heteroatoms selectedfrom N, S and O and are optionally substituted by halogen;

R_(x) is R_(z), or NR_(a)R_(b) where R_(a) and R_(b) are

a) independently hydrogen,

-   -   a carbon based moiety of up to 30 carbon atoms optionally        containing heteroatoms selected from N, S and O and optionally        substituted by halogen, hydroxy and carbon based substituents of        up to 24 carbon atoms, which optionally contain heteroatoms        selected from N, S and O and are optionally substituted by        halogen, or    -   —OSi(R_(f))₃ where R_(f) is hydrogen or a carbon based moiety of        up to 24 carbon atoms optionally containing heteroatoms selected        from N, S and O and optionally substituted by halogen, hydroxy        and carbon based substituents of up to 24 carbon atoms, which        optionally contain heteroatoms selected from N, S and O and are        optionally substituted by halogen; or

b) R_(a) and R_(b) together form a 5-7 member heterocyclic structure of1-3 heteroatoms selected from N, S and O, or a substituted 5-7 memberheterocyclic structure of 1-3 heteroatoms selected from N, S and Osubstituted by halogen, hydroxy or carbon based substituents of up to 24carbon atoms, which optionally contain heteroatoms selected from N, Sand O and are optionally substituted by halogen; or

c) one of R_(a) or R_(b) is —C(O)—, a C₁-C₅ divalent alkylene group or asubstituted C₁-C₅ divalent alkylene group bound to the moiety L to forma cyclic structure with at least 5 members, wherein the substituents ofthe substituted C₁-C₅ divalent alkylene group are selected from thegroup consisting of halogen, hydroxy, and carbon based substituents ofup to 24 carbon atoms, which optionally contain heteroatoms selectedfrom N, S and O and are optionally substituted by halogen;

where B is substituted, L is substituted or L¹ is additionallysubstituted, the substituents are selected from the group consisting ofhalogen, up to per-halo, and Wn, where n is 0-3;

wherein each W is independently selected from the group consisting of—CN, —CO₂R⁷, —C(O)NR⁷R⁷, —C(O)—R⁷, —NO₂, —OR⁷, —SR⁷, —NR⁷R⁷,—NR⁷C(O)OR⁷, —NR⁷C(O)R⁷, —Q—Ar, and carbon based moieties of up to 24carbon atoms, optionally containing heteroatoms selected from N, S and Oand optionally substituted by one or more substituents independentlyselected from the group consisting of —CN, —CO₂R⁷, —C(O)R⁷, —C(O)NR⁷R⁷,—OR⁷, —SR⁷, —NR⁷R⁷, —NO₂, —NR⁷C(O)R⁷, —NR⁷C(O)OR⁷ and halogen up toper-halo; with each R⁷ independently selected from H or a carbon basedmoiety of up to 24 carbon atoms, optionally containing heteroatomsselected from N, S and O and optionally substituted by halogen,

wherein Q is —O—, —S—, —N(R⁷)—, —(CH₂)_(m)—, —C(O)—, —CH(OH)—,—(CH₂)_(m)O, —(CH₂)_(m)S—, —(CH₂)_(m)N(R⁷)—, —O(CH₂)_(m)—, —CHX^(a)—,—CX^(a) ₂—, —S—(CH₂)_(m)—, and —N(R⁷)(CH₂)_(m)—, where m=1-3, and X^(a)is halogen; and

Ar is a 5- or 6-member aromatic structure containing 0-2 membersselected from the group consisting of nitrogen, oxygen and sulfur, whichis optionally substituted by halogen, up to per-halo, and optionallysubstituted by Z_(n1), wherein n1 is 0 to 3 and each Z is independentlyselected from the group consisting of —CN, —CO₂R⁷, —C(O)R⁷, —C(O)NR⁻R⁻,—NO₂, —OR⁷, —SR⁷—NR⁷R⁷, —NR⁷C(O)OR⁷, —NR⁷C(O)R⁷, and a carbon basedmoiety of up to 24 carbon atoms, optionally containing heteroatomsselected from N, S and O and optionally substituted by one or moresubstituents selected from the group consisting of —CN, —CO₂R⁷, —COR⁷,—C(O)NR⁷R⁷, —OR⁷, —SR⁷, —NO₂, —NR⁷R⁷, —NR⁷C(O)R⁷, and —NR⁷C(O)OR⁷, withR⁷ as defined above.

In formula I, suitable hetaryl groups include, but are not limited to,5-12 carbon-atom aromatic rings or ring systems containing 1-3 rings, atleast one of which is aromatic, in which one or more, e.g., 1-4 carbonatoms in one or more of the rings can be replaced by oxygen, nitrogen orsulfur atoms. Each ring typically has 3-7 atoms. For example, B can be2- or 3-furyl, 2- or 3-thienyl, 2- or 4-triazinyl, 1-, 2- or 3-pyrrolyl,1-, 2-, 4- or 5-imidazolyl, 11-, 3-, 4- or 5-pyrazolyl, 2-, 4- or5-oxazolyl, 3-, 4- or 5-isoxazolyl, 2-, 4- or 5-thiazolyl, 3-, 4- or5-isothiazolyl, 2-, 3- or 4-pyridyl, 2-, 4-, 5- or 6-pyrimidinyl,1,2,3-triazol-1-, -4- or -5-yl, 1,2,4-triazol-1-, -3- or -5-yl, 1- or5-tetrazolyl, 1,2,3-oxadiazol-4- or -5-yl, 1,2,4-oxadiazol-3- or -5-yl,1,3,4-thiadiazol-2- or -5-yl, 1,2,4-oxadiazol-3- or -5-yl,1,3,4-thiadiazol-2- or -5-yl, 1,3,4-thiadiazol-3- or -5-yl,1,2,3-thiadiazol-4- or -5-yl, 2-, 3-, 4-, 5- or 6-2H-thiopyranyl, 2-, 3-or 4-4H-thiopyranyl, 3- or 4-pyridazinyl, pyrazinyl, 2-, 3-, 4-, 5-, 6-or 7-benzofuryl, 2-, 3-, 4-, 5-, 6- or 7-benzothienyl, 1-, 2-, 3-, 4-,5-, 6- or 7-indolyl, 1-, 2-, 4- or 5-benzimidazolyl, 1-, 3-, 4-, 5-, 6-or 7-benzopyrazolyl, 2-, 4-, 5-, 6- or 7-benzoxazolyl, 3-, 4-, 5- 6- or7-benzisoxazolyl, 1-, 3-, 4-, 5-, 6- or 7-benzothiazolyl, 2-, 4-, 5-, 6-or 7-benzisothiazolyl, 2-, 4-, 5-, 6- or 7-benz-1,3-oxadiazolyl, 2-, 3-,4-, 5-, 6-, 7- or 8-quinolinyl, 1-, 3-, 4-, 5-, 6-, 7-, 8-isoquinolinyl,1-, 2-, 3-, 4- or 9-carbazolyl, 1-, 2-, 3-, 4-, 5-, 6-, 7-, 8- or9-acridinyl, or 2-, 4-, 5-, 6-, 7- or 8-quinazolinyl, or additionallyoptionally substituted phenyl, 2- or 3-thienyl, 1,3,4-thiadiazolyl,3-pyrryl, 3-pyrazolyl, 2-thiazolyl or 5-thiazolyl, etc. For example, Bcan be 4-methyl-phenyl, 5-methyl-2-thienyl, 4-methyl-2-thienyl,1-methyl-3-pyrryl, 1-methyl-3-pyrazolyl, 5-methyl-2-thiazolyl or5-methyl-1,2,4-thiadiazol-2-yl.

Suitable alkyl groups and alkyl portions of groups, e.g., alkoxy, etc.throughout include methyl, ethyl, propyl, butyl, etc., including allstraight-chain and branched isomers such as isopropyl, isobutyl,sec-butyl, tert-butyl, etc.

Suitable aryl groups which do not contain heteroatoms include, forexample, phenyl and 1- and 2-naphthyl.

The term “cycloalkyl”, as used herein, refers to cyclic structures withor without alkyl substituents such that, for example, “C₄ cycloalkyl”includes methyl substituted cyclopropyl groups as well as cyclobutylgroups. The term “cycloalkyl”, as used herein also includes saturatedheterocyclic groups.

Suitable halogen groups include F, Cl, Br, and/or I, from one toper-substitution (i.e. all H atoms on a group replaced by a halogenatom) being possible where an alkyl group is substituted by halogen,mixed substitution of halogen atom types also being possible on a givenmoiety.

The invention also relates to compounds per se, of formula I.

The present invention is also directed to pharmaceutically acceptablesalts of formula I. Suitable pharmaceutically acceptable salts are wellknown to those skilled in the art and include basic salts of inorganicand organic acids, such as hydrochloric acid, hydrobromic acid, sulfuricacid, phosphoric acid, methanesulfonic acid, trifluoromethanesulfonicacid, benzenesulfonic acid, p-toluenesulfonic acid,1-naphthalenesulfonic acid, 2-naphthalenesulfonic acid, acetic acid,trifluoroacetic acid, malic acid, tartaric acid, citric acid, lacticacid, oxalic acid, succinic acid, fumaric acid, maleic acid, benzoicacid, salicylic acid, phenylacetic acid, and mandelic acid. In addition,pharmaceutically acceptable salts include acid salts of inorganic bases,such as salts containing alkaline cations (e.g., Li⁺ Na⁺ or K⁺),alkaline earth cations (e.g., Mg⁺², Ca⁺² or Ba⁺²), the ammonium cation,as well as acid salts of organic bases, including aliphatic and aromaticsubstituted ammonium, and quaternary ammonium cations, such as thosearising from protonation or peralkylation of triethylamine,N,N-diethylamine, N,N-dicyclohexylamine, lysine, pyridine,N,N-dimethylaminopyridine (DMAP), 1,4-diazabiclo[2.2.2]octane (DABCO),1,5-diazabicyclo[4.3.0]non-5-ene (DBN) and1,8-diazabicyclo[5.4.0]undec-7-ene (DBU).

A number of the compounds of Formula I possess asymmetric carbons andcan therefor exist in racemic and optically active forms. Methods ofseparation of enantiomeric and diastereomeric mixtures are well known toone skilled in the art. The present invention encompasses any isolatedracemic or optically active form of compounds described in Formula Iwhich possess raf inhibitory activity.

General Preparative Methods

The compounds of Formula I may be prepared by the use of known chemicalreactions and procedures, some from starting materials which arecommercially available. Nevertheless, general preparative methods areprovided below to aid one skilled in the art in synthesizing thesecompounds, with more detailed examples being provided in theExperimental section which follows.

Substituted anilines may be generated using standard methods (March.Advanced Organic Chemistry, 3^(rd) Ed.; John Wiley: New York (1985).Larock. Comprehensive Organic Transformations; VCH Publishers: New York(1989)). As shown in Scheme I, aryl amines are commonly synthesized byreduction of nitroaryls using a metal catalyst, such as Ni, Pd, or Pt,and H₂ or a hydride transfer agent, such as formate, cyclohexadiene, ora borohydride (Rylander. Hydrogenation Methods; Academic Press: London,UK (1985)). Nitroaryls may also be directly reduced using a stronghydride source, such as LiAlH₄ (Seyden-Penne. Reductions by the Alumino-and Borohydrides in Organic Synthesis; VCH Publishers: New York (1991)),or using a zero valent metal, such as Fe, Sn or Ca, often in acidicmedia. Many methods exist for the synthesis of nitroaryls (March.Advanced Organic Chemistry, 3^(rd) Ed.; John Wiley New York (1985).Larock. Comprehensive Organic Transformations; VCH Publishers: New York(1989)).

Scheme I Reduction of Nitroaryls to Aryl Amines

Nitroaryls are commonly formed by electrophilic aromatic nitration usingHNO₃, or an alternative NO₂ ⁻ source. Nitroaryls may be furtherelaborated prior to reduction. Thus, nitroaryls substituted with

potential leaving groups (e.g. F, Cl, Br, etc.) may undergo substitutionreactions on treatment with nucleophiles, such as thiolate (exemplifiedin Scheme II) or phenoxide. Nitroaryls may also undergo Ullman-typecoupling reactions (Scheme II).

Scheme II Selected Nucleophilic Aromatic Substitution using Nitroaryls

Nitroaryls may also undergo transition metal mediated cross couplingreactions. For example, nitroaryl electrophiles, such as nitroarylbromides, iodides or triflates, undergo palladium mediated crosscoupling reactions with aryl nucleophiles, such as arylboronic acids(Suzuki reactions, exemplified below), aryltins (Stille reactions) orarylzincs (Negishi reaction) to afford the biaryl (5).

Either nitroaryls or anilines may be converted into the correspondingarenesulfonyl chloride (7) on treatment with chlorosulfonic acid.Reaction of the sulfonyl chloride with a fluoride source, such as KFthen affords sulfonyl fluoride (8). Reaction of sulfonyl fluoride 8 withtrimethylsilyl trifluoromethane in the presence of a fluoride source,such as tris(dimethylamino)sulfonium difluorotrimethylsiliconate (TASF)leads to the corresponding trifluoromethylsulfone (9). Alternatively,sulfonyl chloride 7 may be reduced to the arenethiol (10), for examplewith zinc amalgum. Reaction of thiol 10 with CHClF₂ in the presence ofbase gives the difluoromethyl mercaptam (11), which may be oxidized tothe sulfone (12) with any of a variety of oxidants, includingCrO₃-acetic anhydride (Sedova et al. Zh. Org. Khim. 1970, 6, (568).

Scheme III Selected Methods of Fluorinated Aryl Sulfone Synthesis

As shown in Scheme IV, non-symmetrical urea formation may involvereaction of an aryl isocyanate (14) with an aryl amine (13). Theheteroaryl isocyanate may be synthesized from a heteroaryl amine bytreatment with phosgene or a phosgene equivalent, such astrichloromethyl chloroformate (diphosgene), bis(trichloromethyl)carbonate (triphosgene), or N,N′-carbonyldiimidazole (CDI). Theisocyanate may also be derived from a heterocyclic carboxylic acidderivative, such as an ester, an acid halide or an anhydride by aCurtius-type rearrangement. Thus, reaction of acid derivative 16 with anazide source, followed by rearrangement affords the isocyanate. Thecorresponding carboxylic acid (17) may also be subjected to Curtius-typerearrangements using diphenylphosphoryl azide (DPPA) or a similarreagent.

Scheme IV Selected Methods of Non-Symmetrical Urea Formation

Finally, ureas may be further manipulated using methods familiar tothose skilled in the art.

The invention also includes pharmaceutical compositions including acompound of Formula I, and a physiologically acceptable carrier.

The compounds may be administered orally, topically, parenterally, byinhalation or spray or rectally in dosage unit formulations. The term‘administration by injection’ includes intravenous, intramuscular,subcutaneous and parenteral injections, as well as use of infusiontechniques. One or more compounds may be present in association with oneor more non-toxic pharmaceutically acceptable carriers and if desiredother active ingredients.

Compositions intended for oral use may be prepared according to anysuitable method known to the art for the manufacture of pharmaceuticalcompositions. Such compositions ma contain one or more agents selectedfrom the group consisting of diluents, sweetening agents, flavoringagents, coloring agents and preserving agents in order to providepalatable preparations. Tablets contain the active ingredient inadmixture with non-toxic pharmaceutically acceptable excipients whichare suitable for the manufacture of tablets. These excipients may be,for example, inert diluents, such as calcium carbonate, sodiumcarbonate, lactose, calcium phosphate or sodium phosphate; granulatingand disintegrating agents, for example, corn starch, or alginic acid;and binding agents, for example magnesium stearate, stearic acid ortalc. The tablets may be uncoated or they may be coated by knowntechniques to delay disintegration and adsorption in thegastrointestinal tract and thereby provide a sustained action over alonger period. For example, a time delay material such as glycerylmonostearate or glyceryl distearate may be employed. These compounds mayalso be prepared in solid, rapidly released form.

Formulations for oral use may also be presented as hard gelatin capsuleswherein the active ingredient is mixed with an inert solid diluent, forexample, calcium carbonate, calcium phosphate or kaolin, or as softgelatin capsules wherein the active ingredient is mixed with water or anoil medium, for example peanut oil, liquid paraffin or olive oil.

Aqueous suspensions contain the active materials in admixture withexcipients suitable for the manufacture of aqueous suspensions. Suchexcipients are suspending agents, for example sodiumcarboxymethylcellulose, methylcellulose, hydroxypropyl methylcellulose,sodium alginate, polyvinylpyrrolidone, gum tragacanth and gum acacia;dispersing or wetting agents may be a naturally occurring phosphatide,for example, lecithin, or condensation products or an alkylene oxidewith fatty acids, for example polyoxyethylene stearate, or condensationproducts of ethylene oxide with long chain aliphatic alcohols, forexample heptadecaethylene oxycetanol, or condensation products ofethylene oxide with partial esters derived from fatty acids and hexitolsuch as polyoxyethylene sorbitol monooleate, or condensation products ofethylene oxide with partial esters derived from fatty acids and hexitolanhydrides, for example polyethylene sorbitan monooleate. The aqueoussuspensions may also contain one or more preservatives, for exampleethyl, or n-propyl p-hydroxybenzoate, one or more coloring agents, oneor more flavoring agents, and one or more sweetening agents, such assucrose or saccharin.

Dispersible powders and granules suitable for preparation of an aqueoussuspension by the addition of water provide the active ingredient inadmixture with a dispersing or wetting agent, suspending agent and oneor more preservatives. Suitable dispersing or wetting agents andsuspending agents are exemplified by those already mentioned above.Additional excipients, for example, sweetening, flavoring and coloringagents, may also be present.

The compounds may also be in the form of non-aqueous liquidformulations, e.g., oily suspensions which may be formulated bysuspending the active ingredients in a vegetable oil, for examplearachis oil, olive oil, sesame oil or peanut oil, or in a mineral oilsuch as liquid paraffin. The oily suspensions may contain a thickeningagent, for example beeswax, hard paraffin or cetyl alcohol. Sweeteningagents such as those set forth above, and flavoring agents may be addedto provide palatable oral preparations. These compositions may bepreserved by the addition of an anti-oxidant such as ascorbic acid.

Pharmaceutical compositions of the invention may also be in the form ofoil-in-water emulsions. The oily phase may be a vegetable oil, forexample olive oil or arachis oil, or a mineral oil, for example liquidparaffin or mixtures of these. Suitable emulsifying agents may benaturally-occurring gums, for example gum acacia or gum tragacanth,naturally-occurring phosphatides, for example soy bean, lecithin, andesters or partial esters derived from fatty acids and hexitolanhydrides, for example sorbitan monooleate, and condensation productsof the said partial esters with ethylene oxide, for examplepolyoxyethylene sorbitan monooleate. The emulsions may also containsweetening and flavoring agents.

Syrups and elixirs may be formulated with sweetening agents, for exampleglycerol, propylene glycol, sorbitol or sucrose. Such formulations mayalso contain a demulcent, a preservative and flavoring and coloringagents.

The compounds may also be administered in the form of suppositories forrectal administration of the drug. These compositions can be prepared bymixing the drug with a suitable non-irritating excipient which is solidat ordinary temperatures but liquid at the rectal temperature and willtherefore melt in the rectum to release the drug. Such materials includecocoa butter and polyethylene glycols.

For all regimens of use disclosed herein for compounds of Formula I, thedaily oral dosage regimen will preferably be from 0.01 to 200 mg/Kg oftotal body weight. The daily dosage for administration by injection,including intravenous, intramuscular, subcutaneous and parenteralinjections, and use of infusion techniques will preferably be from 0.01to 200 mg/Kg of total body weight. The daily rectal dosage regime willpreferably be from 0.01 to 200 mg/Kg of total body weight. The dailytopical dosage regime will preferably be from 0.1 to 200 mg administeredbetween one to four times daily. The daily inhalation dosage regime willpreferably be from 0.01 to 10 mg/Kg of total body weight.

It will be appreciated by those skilled in the art that the particularmethod of administration will depend on a variety of factors, all ofwhich are considered routinely when administering therapeutics. It willalso be appreciated by one skilled in the art that the specific doselevel for a given patient depends on a variety of factors, includingspecific activity of the compound administered, age, body weight,health, sex, diet, time and route of administration, rate of excretion,etc. It will be further appreciated by one skilled in the art that theoptimal course of treatment, i.e., the mode of treatment and the dailynumber of doses of a compound of Formula I or a pharmaceuticallyacceptable salt thereof given for a defined number of days, can beascertained by those skilled in the art using conventional treatmenttests.

It will be understood, however, that the specific dose level for anyparticular patient will depend upon a variety of factors, including theactivity of the specific compound employed, the age, body weight,general health, sex, diet, time of administration, route ofadministration, and rate of excretion, drug combination and the severityof the condition undergoing therapy.

The entire disclosure of all applications, patents and publicationscited above and below are hereby incorporated by reference, includingprovisional application Ser. No. 60/115,877, filed Jan. 13, 1999.

The compounds can be produced from known compounds (or from startingmaterials which, in turn, can be produced from known compounds), e.g.,through the general preparative methods shown below. The activity of agiven compound to inhibit raf kinase can be routinely assayed, e.g.,according to procedures disclosed below. The following examples are forillustrative purposes only and are not intended, nor should they beconstrued to limit the invention in any way.

EXAMPLES

All reactions were performed in flame-dried or oven-dried glasswareunder a positive pressure of dry argon or dry nitrogen, and were stirredmagnetically unless otherwise indicated. Sensitive liquids and solutionswere transferred via syringe or cannula, and introduced into reactionvessels through rubber septa. Unless otherwise stated, the term‘concentration under reduced pressure’ refers to use of a Buchi rotaryevaporator at approximately 15 mmHg. Unless otherwise stated, the term‘under high vacuum’ refers to a vacuum of 0.4-1.0 mmHg.

All temperatures are reported uncorrected in degrees Celsius (° C.).Unless otherwise indicated, all parts and percentages are by weight.

Commercial grade reagents and solvents were used without furtherpurification. N-cyclohexyl-N′-(methylpolystyrene)carbodiimide waspurchased from Calbiochem-Novabiochem Corp. 3-tert-Butylaniline,5-tert-butyl-2-methoxyaniline, 4-bromo-3-(trifluoromethyl)aniline,4-chloro-3-(trifluoromethyl)aniline2-methoxy-5-(trifluoromethyl)aniline, 4-tert-butyl-2-nitroaniline,3-amino-2-naphthol, ethyl 4-isocyanatobenzoate,N-acetyl-4-chloro-2-methoxy-5-(trifluoromethyl)aniline and4-chloro-3-(trifluoromethyl)phenyl isocyanate were purchased and usedwithout further purification. Syntheses of 3-amino-2-methoxyquinoline(E. Cho et al. WO 98/00402; A. Cordi et al. EP 542,609; IBID Bioorg.Med. Chem. 3, 1995, 129), 4-(3-carbamoylphenoxy)-1-nitrobenzene (K.Ikawa Yakugaku Zasshi 79, 1959, 760; Chem. Abstr. 53, 1959, 12761b),3-tert-butylphenyl isocyanate (O. Rohr et al. DE 2,436,108) and2-methoxy-5-(trifluoromethyl)phenyl isocyanate (K. Inukai et al. JP42,025,067; IBID Kogyo Kagaku Zasshi 70, 1967, 491) have previously beendescribed.

Thin-layer chromatography (TLC) was performed using Whatman® pre-coatedglass-backed silica gel 60A F-254 250 μm plates. Visualization of plateswas effected by one or more of the following techniques: (a) ultravioletillumination, (b) exposure to iodine vapor, (c) immersion of the platein a 10% solution of phosphomolybdic acid in ethanol followed byheating, (d) immersion of the plate in a cerium sulfate solutionfollowed by heating, and/or (e) immersion of the plate in an acidicethanol solution of 2,4-dinitrophenylhydrazine followed by heating.Column chromatography (flash chromatography) was performed using 230-400mesh EM Science® silica gel.

Melting points (mp) were determined using a Thomas-Hoover melting pointapparatus or a Mettler FP66 automated melting point apparatus and areuncorrected. Fourier transform infrared spectra were obtained using aMattson 4020 Galaxy Series spectrophotometer. Proton (¹H) nuclearmagnetic resonance (NMR) spectra were measured with a General ElectricGN-Omega 300 (300 MHz) spectrometer with either Me₄Si (δ 0.00) orresidual protonated solvent (CHCl₃ δ 7.26; MeOH δ 3.30; DMSO δ 2.49) asstandard. Carbon (¹³C) NMR spectra were measured with a General ElectricGN-Omega 300 (75 MHz) spectrometer with solvent (CDCl₃ δ 77.0; MeOD-d₃;δ 49.0; DMSO-d₆ δ 39.5) as standard. Low resolution mass spectra (MS)and high resolution mass spectra (HRMS) were either obtained as electronimpact (EI) mass spectra or as fast atom bombardment (FAB) mass spectra.Electron impact mass spectra (EI-MS) were obtained with a HewlettPackard 5989A mass spectrometer equipped with a Vacumetrics DesorptionChemical Ionization Probe for sample introduction. The ion source wasmaintained at 250° C. Electron impact ionization was performed withelectron energy of 70 eV and a trap current of 300 μA. Liquid-cesiumsecondary ion mass spectra (FAB-MS), an updated version of fast atombombardment were obtained using a Kratos Concept 1-H spectrometer.Chemical ionization mass spectra (CI-MS) were obtained using a HewlettPackard MS-Engine (5989A) with methane or ammonia as the reagent gas(1×10⁻⁴ torr to 2.5×10⁻⁴ torr). The direct insertion desorption chemicalionization (DCI) probe (Vacuumetrics, Inc.) was ramped from 0-1.5 ampsin 10 sec and held at 10 amps until all traces of the sample disappeared(˜1-2 min). Spectra were scanned from 50-800 amu at 2 sec per scan.HPLC—electrospray mass spectra (HPLC ES-MS) were obtained using aHewlett-Packard 1100 HPLC equipped with a quaternary pump, a variablewavelength detector, a C-18 column, and a Finnigan LCQ ion trap massspectrometer with electrospray ionization. Spectra were scanned from120-800 amu using a variable ion time according to the number of ions inthe source. Gas chromatography—ion selective mass spectra ((GC-MS) wereobtained with a Hewlett Packard 5890 gas chromatograph equipped with anHP-1 methyl silicone column (0.33 mM coating; 25 m×0.2 mm) and a HewlettPackard 5971 Mass Selective Detector (ionization energy 70 eV).Elemental analyses are conducted by Robertson Microlit Labs, MadisonN.J.

All compounds displayed NMR spectra, LRMS and either elemental analysisor HRMS consistent with assigned structures.

List of Abbreviations and Acronyms:

AcOH acetic acid anh anhydrous atm atmosphere(s) BOC tert-butoxycarbonylCDI 1,1′-carbonyl diimidazole conc concentrated d day(s) decdecomposition DMAC N,N-dimethylacetamide DMPU1,3-dimethyl-3,4,5,6-tetrahydro-2(1H)-pyrimidinone DMFN,N-dimethylformamide DMSO dimethylsulfoxide DPPA diphenylphosphorylazide EDCI 1-(3-dimethylaminopropyl)-3-ethylcarbodiimide EtOAc ethylacetate EtOH ethanol (100%) Et₂O diethyl ether Et₃N triethylamine hhour(s) HOBT 1-hydroxybenzotriazole m-CPBA 3-chloroperoxybenzoic acidMeOH methanol pet. ether petroleum ether (boiling range 30-60° C.) temp.temperature THF tetrahydrofuran TFA trifluoroAcOH Tftrifluoromethanesulfonyl

A. General Methods for Synthesis of Substituted Anilines A1. GeneralMethod for Aryl Amine Formation Via Ether Formation Followed by EsterSaponification, Curtius Rearrangement, and Carbamate DeprotectionSynthesis of 2-Amino-3-methoxynaphthalene

Step 1. Methyl 3-methoxy-2-naphthoate

A slurry of methyl 3-hydroxy-2-naphthoate (10.1 g, 50.1 mmol) and K₂CO₃(7.96 g, 57.6 mmol) in DMF (200 mL) was stirred at room temp. for 15min., then treated with iodomethane (3.43 mL, 55.1 mmol). The mixturewas allowed to stir at room temp. overnight, then was treated with water(200 mL). The resulting mixture was extracted with EtOAc (2×200 mL). Thecombined organic layers were washed with a saturated NaCl solution (100mL), dried (MgSO₄), concentrated under reduced pressure (approximately0.4 mmHg overnight) to give methyl 3-methoxy-2-naphthoate as an amberoil (10.30 g): ¹H-NMR (DMSO-d₆) δ 2.70 (s, 3H), 2.85 (s, 3H), 7.38 (appt, J=8.09 Hz, 1H), 7.44 (s, 1H), 7.53 (app t, J=8.09 Hz, 1H), 7.84 (d,J=8.09 Hz, 1H), 7.90 (s, 1H), 8.21 (s, 1H).

Step 2. 3-Methoxy-2-naphthoic acid

A solution of methyl 3-methoxy-2-naphthoate (6.28 g, 29.10 mmol) andwater (10 mL) in MeOH (100 mL) at room temp. was treated with a 1 N NaOHsolution (33.4 mL, 33.4 mmol). The mixture % vas heated at the refluxtemp. for 3 h, cooled to room temp., and made acidic with a 10% citricacid solution. The resulting solution was extracted with EtOAc (2×100mL). The combined organic layers were washed with a saturated NaClsolution, dried (MgSO₄) and concentrated under reduced pressure. Theresidue was triturated with hexane then washed several times with hexaneto give 3-methoxy-2-naphthoic acid as a white solid (5.40 g, 92%):¹H-NMR (DMSO-d₆) δ 3.88 (s, 3H), 7.34-7.41 (m, 2H), 7.49-7.54 (m, 1H),7.83 (d, J=8.09 Hz, 1H), 7.91 (d, J=8.09 Hz, 1H), 8.19 (s, 1H), 12.83(br s, 1H).

Step 3. 2-(N—(Carbobenzyloxy)amino-3-methoxynaphthalene

A solution of 3-methoxy-2-naphthoic acid (3.36 g, 16.6 mmol) and Et₃N(2.59 mL, 18.6 mmol) in anh toluene (70 mL) was stirred at room temp.for 15 min., then treated with a solution of DPPA (5.12 g, 18.6 mmol) intoluene (10 mL) via pipette. The resulting mixture was heated at 80° C.for 2 h. After cooling the mixture to room temp., benzyl alcohol (2.06mL, 20 mmol) was added via syringe. The mixture was then warmed to 80°C. overnight. The resulting mixture was cooled to room temp., quenchedwith a 10% citric acid solution, and extracted with EtOAc (2×100 mL).The combined organic layers were washed with a saturated NaCl solution,dried (MgSO₄) and concentrated under reduced pressure. The residue waspurified by column chromatography (14% EtOAc/86% hexane) to give2-(N-(carbobenzyloxy)amino-3-methoxynaphthalene as a pale yellow oil(5.1 g, 100%): ¹H-NMR (DMSO-d₆) δ 3.89 (s, 3H), 5.17 (s, 2H), 7.27-7.44(m, 8H), 7.72-7.75 (m, 2H), 8.20 (s, 1H), 8.76 (s, 1H).

Step 4. 2-Amino-3-methoxynaphthalene

A slurry of 2-(N-(carbobenzyloxy)amino-3-methoxynaphthalene (5.0 g, 16.3mmol) and 10% Pd/C (0.5 g) in EtOAc (70 mL) was maintained under a H₂atm (balloon) at room temp. overnight. The resulting mixture wasfiltered through Celite® and concentrated under reduced pressure to give2-amino-3-methoxynaphthalene as a pale pink powder (2.40 g, 85%): ¹H-NMR(DMSO-d₆) δ 3.86 (s, 3H), 6.86 (s, 2H), 7.04-7.16 (m, 2H), 7.43 (d,J=8.0 Hz, 1H), 7.56 (d, J=8.0 Hz, 1H); EI-MS m/z 173 (M⁺).

A2. Synthesis of ω-Carbamyl Anilines Via Formation of a CarbamylpyridineFollowed by Nucleophilic Coupling with an Aryl Amine Synthesis of4-(2-N-Methylcarbamyl-4-pyridyloxy)aniline

Step 1a. Synthesis of 4-chloro-N-methyl-2-pyridinecarboxamide via theMenisci reaction

Caution: this is a highly hazardous, potentially explosive reaction. Toa stirring solution of 4-chloropyridine (10.0 g) in N-methylformamide(250 mL) at room temp. was added conc. H₂SO₄ (3.55 mL) to generate anexotherm. To this mixture was added H₂O₂ (30% wt in H₂O, 17 mL) followedby FeSO₄.7H₂O (0.56 g) to generate another exotherm. The resultingmixture was stirred in the dark at room temp. for 1 h, then warmedslowly over 4 h to 45° C. When bubbling had subsided, the reaction washeated at 60° C. for 16 h. The resulting opaque brown solution wasdiluted with H₂O (700 mL) followed by a 10% NaOH solution (250 mL). Theresulting mixture was extracted with EtOAc (3×500 mL). The organicphases were washed separately with a saturated NaCl solution (3×˜150mL), then they were combined, dried (MgSO₄) and filtered through a padof silica gel with the aid of EtOAc. The resulting brown oil waspurified by column chromatography (gradient from 50% EtOAc/50% hexane to80% EtOAc/20% hexane). The resulting yellow oil crystallized at 0° C.over 72 h to give 4-chloro-N-methyl-2-pyridinecarboxamide (0.61 g,5.3%): TLC (50% EtOAc/50% hexane) R_(f) 0.50; ¹H NMR (CDCl₃) δ 3.04 (d,J=5.1 Hz, 3H), 7.43 (dd, J=5.4, 2.4 Hz, 1H), 7.96 (br s, 1H), 8.21 (s,1H), 8.44 (d, J=5.1 Hz, 1H); CI-MS m/z 171 ((M+H)⁺).

Step 1b. Synthesis of 4-chloropyridine-2-carbonyl chloride HCl salt viapicolinic acid

Anhydrous DMF (6.0 mL) was slowly added to SOCl₂ (180 mL) between 40°and 50° C. The solution was stirred in that temperature range for 10min. then picolinic acid (60.0 g, 487 mmol) was added in portions over30 min. The resulting solution was heated at 72° C. (vigorous SO₂evolution) for 16 h to generate a yellow solid precipitate. Theresulting mixture was cooled to room temp., diluted with toluene (500mL) and concentrated to 200 mL. The toluene addition/concentrationprocess was repeated twice. The resulting nearly dry residue wasfiltered and the solids were washed with toluene (2×200 mL) and driedunder high vacuum for 4 h to afford 4-chloropyridine-2-carbonyl chlorideHCl salt as a yellow-orange solid (92.0 g, 89%).

Step 2. Synthesis of methyl 4-chloropyridine-2-carboxylate HCl salt

Anh DMF (10.0 mL) was slowly added to SOCl₂ (300 mL) at 40-48° C. Thesolution was stirred at that temp. range for 10 min., then picolinicacid (100 g, 812 mmol) was added over 30 min. The resulting solution washeated at 72° C. (vigorous SO₂ evolution) for 16 h to generate a yellowsolid. The resulting mixture was cooled to room temp., diluted withtoluene (500 mL) and concentrated to 200 mL. The tolueneaddition/concentration process was repeated twice. The resulting nearlydry residue was filtered, and the solids were washed with toluene (50mL) and dried under high vacuum for 4 hours to afford4-chloropyridine-2-carbonyl chloride HCl salt as an off-white solid(27.2 g, 16%). This material was set aside.

The red filtrate was added to MeOH (200 mL) at a rate which kept theinternal temperature below 55° C. The contents were stirred at roomtemp. for 45 min., cooled to 5° C. and treated with Et₂O (200 mL)dropwise. The resulting solids were filtered, washed with Et₂O (200 mL)and dried under reduced pressure at 35° C. to provide methyl4-chloropyridine-2-carboxylate HCl salt as a white solid (110 g, 65%):mp 108-112° C.; ¹H-NMR (DMSO-d₆) δ 3.88 (s, 3H); 7.82 (dd, J=5.5, 2.2Hz, 1H); 8.08 (d, J=2.2 Hz, 1H); 8.68 (d, J=5.5 Hz, 1H); 10.68 (br s,1H); HPLC ES-MS m/z 172 ((M+H)⁺).

Step 3a. Synthesis of 4-chloro-N-methyl-2-pyridinecarboxamide frommethyl 4-chloropyridine-2-carboxylate

A suspension of methyl 4-chloropyridine-2-carboxylate HCl salt (89.0 g,428 mmol) in MeOH (75 mL) at 0° C. was treated with a 2.0 M methylaminesolution in THF (1 L) at a rate which kept the internal temp. below 5°C. The resulting mixture was stored at 3° C. for 5 h, then concentratedunder reduced pressure. The resulting solids were suspended in EtOAc (IL) and filtered. The filtrate was washed with a saturated NaCl solution(500 mL), dried (Na₂SO₄) and concentrated under reduced pressure toafford 4-chloro-N-methyl-2-pyridinecarboxamide as pale-yellow crystals(71.2 g, 97%): mp 41-43° C.; ¹H-NMR (DMSO-d₆) δ 2.81 (s, 3H), 7.74 (dd,J=5.1, 2.2 Hz, 1H), 8.00 (d, J=2.2, 1H), 8.61 (d, J=5.1 Hz, 1H), 8.85(br d, 1H); CI-MS m/z 171 ((M+H)⁺).

Step 3b. Synthesis of 4-chloro-N-methyl-2-pyridinecarboxamide from4-chloropyridine-2-carbonyl chloride

4-Chloropyridine-2-carbonyl chloride HCl salt (7.0 g, 32.95 mmol) wasadded in portions to a mixture of a 2.0 M methylamine solution in THF(100 mL) and MeOH (20 mL) at 0° C. The resulting mixture was stored at3° C. for 4 h, then concentrated under reduced pressure. The resultingnearly dry solids were suspended in EtOAc (100 mL) and filtered. Thefiltrate was washed with a saturated NaCl solution (2×100 mL), dried(Na₂SO₄) and concentrated under reduced pressure to provide4-chloro-N-methyl-2-pyridinecarboxamide as a yellow, crystalline solid(4.95 g, 88%): mp 37-40° C.

Step 4. Synthesis of 4-(2-(N-methylcarbamoyl)-4-pyridyloxy)aniline

A solution of 4-aminophenol (9.60 g, 88.0 mmol) in anh. DMF (150 mL) wastreated with potassium tert-butoxide (10.29 g, 91.7 mmol), and thereddish-brown mixture was stirred at room temp. for 2 h. The contentswere treated with 4-chloro-N-methyl-2-pyridinecarboxamide (15.0 g, 87.9mmol) and K₂CO₃ (6.50 g, 47.0 mmol) and then heated at 80° C. for 8 h.The mixture was cooled to room temp. and separated between EtOAc (500mL) and a saturated NaCl solution (500 mL). The aqueous phase wasback-extracted with EtOAc (300 mL). The combined organic layers werewashed with a saturated NaCl solution (4×1000 mL), dried (Na₂SO₄) andconcentrated under reduced pressure. The resulting solids were driedunder reduced pressure at 35° C. for 3 h to afford4-(2-(N-methylcarbamoyl)-4-pyridyloxy)aniline as a light-brown solid17.9 g, 84%): ¹H-NMR (DMSO-d₆) δ 2.77 (d, J=4.8 Hz, 3H), 5.17 (br s,2H), 6.64, 6.86 (AA′BB′ quartet, J=8.4 Hz, 4H), 7.06 (dd, J=5.5, 2.5 Hz,1H), 7.33 (d, J=2.5 Hz, 1H), 8.44 (d, J=5.5 Hz, 1H), 8.73 (br d, 1H);HPLC ES-MS m/z 244 ((M+H)⁺).

A3. General Method for the Synthesis of Anilines by NucleophilicAromatic Addition Followed by Nitroarene Reduction Synthesis of5-(4-Aminophenoxy)isoindoline-1,3-dione

Step 1. Synthesis of 5-hydroxyisoindoline-1,3-dione

To a mixture of ammonium carbonate (5.28 g, 54.9 mmol) in conc. AcOH (25mL) was slowly added 4-hydroxyphthalic acid (5.0 g, 27.45 mmol). Theresulting mixture was heated at 120° C. for 45 min., then the clear,bright yellow mixture was heated at 160° C. for 2 h. The resultingmixture was maintained at 160° C. and was concentrated to approximately15 mL, then was cooled to room temp. and adjusted pH 10 with a 1N NaOHsolution. This mixture was cooled to 0° C. and slowly acidified to pH 5using a 1N HCl solution. The resultant precipitate was collected byfiltration and dried under reduced pressure to yield5-hydroxyisoindoline-1,3-dione as a pale yellow powder as product (3.24g, 72%): ¹H NMR (DMSO-d₆) δ 7.00-7.03 (m, 2H), 7.56 (d, J=9.3 Hz, 1H).

Step 2. Synthesis of 5-(4-nitrophenoxy)isoindoline-1,3-dione

To a stirring slurry of NaH (1.1 g, 44.9 mmol) in DMF (40 mL) at 0° C.was added a solution of 5-hydroxyisoindoline-1,3-dione (3.2 g, 19.6mmol) in DMF (40 mL) dropwise. The bright yellow-green mixture wasallowed to return to room temp. and was stirred for 1 h, then1-fluoro-4-nitrobenzene (2.67 g, 18.7 mmol) was added via syringe in 3-4portions. The resulting mixture was heated at 70° C. overnight, thencooled to room temp. and diluted slowly with water (150 mL), andextracted with EtOAc (2×100 mL). The combined organic layers were dried(MgSO₄) and concentrated under reduced pressure to give5-(4-nitrophenoxy)isoindoline-1,3-dione as a yellow solid (3.3 g, 62%):TLC (30% EtOAc/70% hexane) R_(f) 0.28; ¹H NMR (DMSO-d₆) δ 7.32 (d, J=12Hz, 2H), 7.52-7.57 (m, 2H), 7.89 (d, J=7.8 Hz, 1H), 8.29 (d, J=9 Hz,2H), 11.43 (br s, 1H); CI-MS m/z 285 ((M+H)⁺, 100%).

Step 3. Synthesis of 5-(4-aminophenoxy)isoindoline-1,3-dione

A solution of 5-(4-nitrophenoxy)isoindoline-1,3-dione (0.6 g, 2.11 mmol)in conc. AcOH (12 mL) and water (0.1 mL) was stirred under a stream ofargon while iron powder (0.59 g, 55.9 mmol) was added slowly. Thismixture stirred at room temp. for 72 h, then was diluted with water (25mL) and extracted with EtOAc (3×50 mL). The combined organic layers weredried (MgSO₄) and concentrated under reduced pressure to give5-(4-aminophenoxy)isoindoline-1,3-dione as a brownish solid (0.4 g,75%): TLC (50% EtOAc/50% hexane) R_(f) 0.27; ¹H NMR (DMSO-d₆) □5.14 (brs, 2H), 6.62 (d, J=8.7 Hz, 2H), 6.84 (d, J=8.7 Hz, 2H), 7.03 (d, J=2.1Hz, 1H), 7.23 (dd, 1H), 7.75 (d, J=8.4 Hz, 1H), 11.02 (s, 1H); HPLCES-MS m/z 255 ((M+H)⁺, 100%).

A4. General Method for the Synthesis of Pyrrolylanilines Synthesis of5-tert-Butyl-2-(2,5-dimethylpyrrolyl)aniline

Step 1. Synthesis of 1-(4-tert-butyl-2-nitrophenyl)-2,5-dimethylpyrrole

To a stirring solution of 2-nitro-4-tert-butylaniline (0.5 g, 2.57 mmol)in cyclohexane (10 mL) was added AcOH (0.1 mL) and acetonylacetone(0.299 g, 2.63 mmol) via syringe. The reaction mixture was heated at120° C. for 72 h with azeotropic removal of volatiles. The reactionmixture was cooled to room temp., diluted with CH₂Cl₂ (10 mL) andsequentially washed with a 1N HCl solution (15 mL), a 1N NaOH solution(15 mL) and a saturated NaCl solution (15 mL), dried (MgSO₄) andconcentrated under reduced pressure. The resulting orange-brown solidswere purified via column chromatography (60 g SiO₂; gradient from 6%EtOAc/94% hexane to 25% EtOAc/75% hexane) to give1-(4-tert-butyl-2-nitrophenyl)-2,5-dimethylpyrrole as an orange-yellowsolid (0.34 g, 49%): TLC (15% EtOAc/85% hexane) R_(f) 0.67; ¹H NMR(CDCl₃) δ 1.34 (s, 9H), 1.89 (s, 6H), 5.84 (s, 2H), 7.19-7.24 (m, 1H),7.62 (dd, 1H), 7.88 (d, J=2.4 Hz, 1H); CI-MS m/z 273 ((M+H)⁺, 50%).

Step 2. Synthesis of 5-tert-Butyl-2-(2,5-dimethylpyrrolyl)aniline

A slurry of 1-(4-tert-butyl-2-nitrophenyl)-2,5-dimethylpyrrole (0.341 g,1.25 mmol), 10% Pd/C (0.056 g) and EtOAc (50 mL) under an H₂ atmosphere(balloon) was stirred for 72 h, then filtered through a pad of Celite®.The filtrate was concentrated under reduced pressure to give5-tert-butyl-2-(2,5-dimethylpyrrolyl)aniline as yellowish solids (0.30g, 99%): TLC (10% EtOAc/90% hexane) R_(f) 0.43; ¹H NMR (CDCl₃) δ 1.28(s, 9H), 1.87-1.91 (m, 8H), 5.85 (br s, 2H), 6.73-6.96 (m, 3H), 7.28 (brs, 1H).

A5. General Method for the Synthesis of Anilines from Anilines byNucleophilic Aromatic Substitution Synthesis of4-(2-(N-Methylcarbamoyl)-4-pyridyloxy)-2-methylaniline HCl Salt

A solution of 4-amino-3-methylphenol (5.45 g, 44.25 mmol) in drydimethylacetamide (75 mL) was treated with potassium tert-butoxide(10.86 g, 96.77 mmol) and the black mixture was stirred at room temp.until the flask had reached room temp. The contents were then treatedwith 4-chloro-N-methyl-2-pyridinecarboxamide (Method A2, Step 3b; 7.52g, 44.2 mmol) and heated at 110° C. for 8 h. The mixture was cooled toroom temp. and diluted with water (75 mL). The organic layer wasextracted with EtOAc (5×100 mL). The combined organic layers were washedwith a saturated NaCl solution (200 mL), dried (MgSO₄) and concentratedunder reduced pressure. The residual black oil was treated with Et₂O (50mL) and sonicated. The solution was then treated with HCl (1 M in Et₂O;100 mL) and stirred at room temp. for 5 min. The resulting dark pinksolid (7.04 g, 24.1 mmol) was removed by filtration from solution andstored under anaerobic conditions at 0° C. prior to use: ¹H NMR(DMSO-d₆) δ 2.41 (s, 3H), 2.78 (d, J=4.4 Hz, 3H), 4.93 (br s, 2H), 7.19(dd, J=8.5, 2.6 Hz, 1H), 7.23 (dd, J=5.5, 2.6 Hz, 1H), 7.26 (d, J=2.6Hz, 1H), 7.55 (d, J=2.6 Hz, 1H), 7.64 (d, J=8.8 Hz, 1H), 8.55 (d, J=5.9Hz, 1H), 8.99 (q, J=4.8 Hz, 1H).

A6. General Method for the Synthesis of Anilines from Hydroxyanilines byN-Protection, Nucleophilic Aromatic Substitution and DeprotectionSynthesis of 4-(2-(N-Methylcarbamoyl)-4-pyridyloxy)-2-chloroaniline

Step 1: Synthesis of 3-Chloro-4-(2,2,2-trifluoroacetylamino)phenol

Iron (3.24 g, 58.00 mmol) was added to stirring TFA (200 mL). To thisslurry was added 2-chloro-4-nitrophenol (10.0 g 58.0 mmol) andtrifluoroacetic anhydride (20 mL). This gray slurry was stirred at roomtemp. for 6 d. The iron was filtered from solution and the remainingmaterial was concentrated under reduced pressure. The resulting graysolid was dissolved in water (20 mL). To the resulting yellow solutionwas added a saturated NaHCO₃ solution (50 mL). The solid whichprecipitated from solution was removed. The filtrate was slowly quenchedwith the sodium bicarbonate solution until the product visibly separatedfrom solution (determined was using a mini work-up vial). The slightlycloudy yellow solution was extracted with EtOAc (3×125 mL). The combinedorganic layers were washed with a saturated NaCl solution (125 mL),dried (MgSO₄) and concentrated under reduced pressure. The ¹H NMR(DMSO-d₆) indicated a 1:1 ratio of the nitrophenol starting material andthe intended product 3-chloro-4-(2,2,2-trifluoroacetylamino)phenol. Thecrude material was taken on to the next step without furtherpurification.

Step 2: Synthesis of4-(2-(N-Methylcarbamoyl)-4-pyridyloxy)-2-chlorophenyl(222-trifluoro)acetamide

A solution of crude 3-chloro-4-(2,2,2-trifluoroacetylamino)phenol (5.62g, 23.46 mmol) in dry dimethylacetamide (50 mL) was treated withpotassium tert-butoxide (5.16 g, 45.98 mmol) and the brownish blackmixture was stirred at room temp. until the flask had cooled to roomtemp. The resulting mixture was treated with4-chloro-N-methyl-2-pyridinecarboxamide (Method A2, Step 3b; 1.99 g,11.7 mmol) and heated at 100° C. under argon for 4 d. The black reactionmixture was cooled to room temp. and then poured into cold water (100mL). The mixture was extracted with EtOAc (3×75 mL) and the combinedorganic layers were concentrated under reduced pressure. The residualbrown oil was purified by column chromatography (gradient from 20%EtOAc/pet. ether to 40% EtOAc/pet. ether) to yield4-(2-(N-Methylcarbamoyl)-4-pyridyloxy)-2-chlorophenyl(222-trifluoro)acetamide as a yellow solid (8.59 g, 23.0 mmol).

Step 3. Synthesis of4-(2-(N-Methylcarbamoyl)-4-pyridyloxy)-2-chloroaniline

A solution of crude4-(2-(N-Methylcarbamoyl)-4-pyridyloxy)-2-chlorophenyl(222-trifluoro)acetamide (8.59 g, 23.0 mmol) in dry 4-dioxane (20 mL)was treated with a 1N NaOH solution (20 mL). This brown solution wasallowed to stir for 8 h. To this solution was added EtOAc (40 mL). Thegreen organic layer was extracted with EtOAc (3×40 mL) and the solventwas concentrated to yield4-(2-(N-Methylcarbamoyl)-4-pyridyloxy)-2-chloroaniline as a green oilthat solidified upon standing (2.86 g, 10.30 mmol): ¹H NMR (DMSO-d₆) δ2.77 (d, J=4.8 Hz, 3H), 5.51 (s, 2H), 6.60 (dd, J=8.5, 2.6 Hz, 1H), 6.76(d, J=2.6 Hz, 1H), 7.03 (d, J=8.5 Hz, 1H), 7.07 (dd, J=5.5, 2.6, Hz,1H), 7.27 (d, J=2.6 Hz, 1H), 8.46 (d, J=5.5 Hz, 1H), 8.75 (q, J=4.8,1H).

A7. General Method for the Deprotection of an Acylated Aniline Synthesisof 4-Chloro-2-methoxy-5-(trifluoromethyl)aniline

A suspension of 3-chloro-6-(N-acetyl)-4-(trifluoromethyl)anisole (4.00g, 14.95 mmol) in a 6M HCl solution (24 mL) was heated at the refluxtemp. for 1 h. The resulting solution was allowed to cool to room temp.during which time it solidified slightly. The resulting mixture wasdiluted with water (20 mL) then treated with a combination of solid NaOHand a saturated NaHCO₃ solution until the solution was basic. Theorganic layer was extracted with CH₂Cl₂ (3×50 mL). The combined organicswere dried (MgSO₄) and concentrated under reduced pressure to yield4-chloro-2-methoxy-5-(trifluoromethyl)aniline as a brown oil (3.20 g,14.2 mmol): ¹H NMR (DMSO-d₆) δ 3.84 (s, 3H), 5.30 (s, 2H), 7.01 (s, 2H).

A8. General Method for Synthesis of ω-Alkoxy-ω-carboxyphenyl AnilinesSynthesis of 4-(3-(N-Methylcarbamoyl)-4-methoxyphenoxy)aniline

Step 1. 4-(3-Methoxylcarbonyl-4-methoxyphenoxy)-1-nitrobenzene

To a solution of 4-(3-carboxy-4-hydroxyphenoxy)-1-nitrobenzene (preparedfrom 2,5-dihydroxybenzoic acid in a manner analogous to that describedin Method A13, Step 1, 12 mmol) in acetone (50 mL) was added K₂CO₃ (5 g)and dimethyl sulfate (3.5 mL). The resulting mixture was heated at thereflux temp. overnight, then cooled to room temp. and filtered through apad of Celite®. The resulting solution was concentrated under reducedpressure, absorbed onto SiO₂, and purified by column chromatography (50%EtOAc/50% hexane) to give4-(3-methoxycarbonyl-4-methoxyphenoxy)-1-nitrobenzene as a yellow powder(3 g): mp 115-118° C.

Step 2. 4-(3-Carboxy-4-methoxyphenoxy)-1-nitrobenzene

A mixture of 4-(3-methoxycarbonyl-4-methoxyphenoxy)-1-nitrobenzene (1.2g), KOH (0.33 g) and water (5 mL) in MeOH (45 mL) was stirred at roomtemp. overnight and then heated at the reflux temp. for 4 h. Theresulting mixture was cooled to room temp. and concentrated underreduced pressure. The residue was dissolved in water (50 mL), and theaqueous mixture was made acidic with a 1N HCl solution. The resultingmixture was extracted with EtOAc (50 mL). The organic layer was dried(MgSO₄) and concentrated under reduced pressure to give4-(3-carboxy-4-methoxyphenoxy)-1-nitrobenzene (1.04 g).

Step 3. 4-(3-(N-Methylcarbamoyl)-4-methoxyphenoxy)-1-nitrobenzene

To a solution of 4-(3-carboxy-4-methoxyphenoxy)-1-nitrobenzene (0.50 g,1.75 mmol) in CH₂Cl₂ (12 mL) was added SOCl₂ (0.64 mL, 8.77 mmol) inportions. The resulting solution was heated at the reflux temp. for 18h, cooled to room temp., and concentrated under reduced pressure. Theresulting yellow solids were dissolved in CH₂Cl₂ (3 mL) then theresulting solution was treated with a methylamine solution (2.0 M inTHF, 3.5 mL, 7.02 mmol) in portions (CAUTION: gas evolution), andstirred at room temp. for 4 h. The resulting mixture was treated with a1N NaOH solution, then extracted with CH₂Cl₂ (25 mL). The organic layerwas dried (Na₂SO₄) and concentrated) under reduced pressure to give4-(3-(N-methylcarbamoyl)-4-methoxyphenoxy)-1-nitrobenzene as a yellowsolid (0.50 g, 95%).

Step 4. 4-(3-(N-Methylcarbamoyl)-4-methoxyphenoxy)aniline

A slurry of 4-(3-(N-methylcarbamoly)-4-methoxyphenoxy)-1-nitrobenzene(0.78 g, 2.60 mmol) and 10% Pd/C (0.20 g) in EtOH (55 mL) was stirredunder 1 atm of H₂ (balloon) for 2.5 d, then was filtered through a padof Celite®. The resulting solution was concentrated under reducedpressure to afford 4-(3-(N-methylcarbamoly)-4-methoxyphenoxy)aniline asan off-white solid (0.68 g, 96%): TLC (0.1% Et₃N/99.9% EtOAc) R_(f)0.36.

A9. General Method for Preparation of ω-Alkylphthalimide-containingAnilines Synthesis of 5-(4-Aminophenoxy)-2-methylisoindoline-1,3-dione

Step 1. Synthesis of 5-(4-Nitrophenoxy)-2-methylisoindoline-1,3-dione

A slurry of 5-(4-nitrophenoxy)isoindoline-1,3-dione (A3 Step 2; 1.0 g,3.52 mmol) and NaH (0.13 g, 5.27 mmol) in DMF (15 mL) was stirred atroom temp. for 1 h, then treated with methyl iodide (0.3 mL, 4.57 mmol).The resulting mixture was stirred at room temp. overnight, then wascooled to ° C. and treated with water (10 mL). The resulting solids werecollected and dried under reduced pressure to give5-(4-nitrophenoxy)-2-methylisoindoline-1,3-dione as a bright yellowsolid (0.87 g, 83%): TLC (35% EtOAc/65% hexane) R_(f) 0.61.

Step 2. Synthesis of 5-(4-Aminophenoxy)-2-methylisoindoline-1,3-dione

A slurry of nitrophenoxy)-2-methylisoindoline-1,3-dione (0.87 g, 2.78mmol) and 10% Pd/C (0.10 g) in MeOH was stirred under 1 atm of H₂(balloon) overnight. The resulting mixture was filtered through a pad ofCelite® and concentrated under reduced pressure. The resulting yellowsolids were dissolved in EtOAc (3 mL) and filtered through a plug ofSiO₂ (60% EtOAc/40% hexane) to afford5-(4-aminophenoxy)-2-methylisoindoline-1,3-dione as a yellow solid (0.67g, 86%): TLC (40% EtOAc/60% hexane) R_(f) 0.27.

A10. General Method for Synthesis of ω-Carbamoylaryl Anilines ThroughReaction of co-Alkoxycarbonylaryl Precursors with Amines Synthesis of4-(2-(N-(2-morpholin-4-ylethyl)carbamoyl)pyridyloxy)aniline

Step 1. Synthesis of4-Chloro-2-(N-(2-morpholin-4-ylethyl)carbamoyl)pyridine

To a solution of methyl 4-chloropyridine-2-carboxylate HCl salt (MethodA2, Step 2; 1.01 g, 4.86 mmol) in THF (20 mL) was added4-(2-aminoethyl)morpholine (2.55 mL, 19.4 mmol) dropwise and theresulting solution was heated at the reflux temp. for 20 h, cooled toroom temp., and treated with water (50 mL). The resulting mixture wasextracted with EtOAc (50 mL). The organic layer was dried (MgSO₄) andconcentrated under reduced pressure to afford4-chloro-2-(N-(2-morpholin-4-ylethyl)carbamoyl)pyridine as a yellow oil(1.25 g, 95%): TLC (10% MeOH/90% EtOAc) R_(f) 0.50.

Step 2. Synthesis of4-(2-(N-(2-Morpholin-4-ylethyl)carbamoyl)pyridyloxy)aniline

A solution of 4-aminophenol (0.49 g, 4.52 mmol) and potassiumtert-butoxide (0.53 g, 4.75 mol) in DMF (8 mL) was stirred at room temp.for 2 h, then was sequentially treated with4-chloro-2-(N-(2-morpholin-4-ylethyl)carbamoyl)pyridine (1.22 g, 4.52mmol) and K₂CO₃ (0.31 g, 2.26 mmol). The resulting mixture was heated at75° C. overnight, cooled to room temp., and separated between EtOAc (25mL) and a saturated NaCl solution (25 mL). The aqueous layer was backextracted with EtOAc (25 mL). The combined organic layers were washedwith a saturated NaCl solution (3×25 mL) and concentrated under reducedpressure. The resulting brown solids were purified by columnchromatography (58 g; gradient from 100% EtOAc to 25% MeOH/75% EtOAc) toafford 4-(2-(N-(2-morpholin-4-ylethyl)carbamoyl)pyridyloxy)aniline (1.0g, 65%): TLC (10% MeOH/90% EtOAc) R_(f) 0.32.

A11. General Method for the Reduction of Nitroarenes to ArylaminesSynthesis of 4-(3-Carboxyphenoxy)aniline

A slurry of 4-(3-carboxyphenoxy)-1-nitrobenzene (5.38 g, 20.7 mmol) and10% Pd/C (0.50 g) in MeOH (120 mL) was stirred under an H₂ atmosphere(balloon) for 2 d. The resulting mixture was filtered through a pad ofCelite®, then concentrated under reduced pressure to afford4-(3-carboxyphenoxy)aniline as a brown solid (2.26 g, 48%): TLC (10%MeOH/90% CH₂Cl₂) R_(f) 0.44 (streaking).

A12. General Method for the Synthesis of Isoindolinone-ContainingAnilines Synthesis of 4-(1-Oxoisoindolin-5-yloxy)aniline

Step 1. Synthesis of 5-hydroxyisoindolin-1-one

To a solution of 5-hydroxyphthalimide (19.8 g, 121 mmol) in AcOH (500mL) was slowly added zinc dust (47.6 g, 729 mmol) in portions, then themixture was heated at the reflux temp. for 40 min., filtered hot, andconcentrated under reduced pressure. The reaction was repeated on thesame scale and the combined oily residue was purified by columnchromatography (1.1 Kg SiO₂; gradient from 60% EtOAc/40% hexane to 25%MeOH/75% EtOAc) to give 5-hydroxyisoindolin-1-one (3.77 g): TLC (100%EtOAc) R_(f) 0.17; HPLC ES-MS m/z 150 ((M+H)⁺).

Step 2. Synthesis of 4-(1-isoindolinon-5-yloxy)-1-nitrobenzene

To a slurry of NaH (0.39 g, 16.1 mmol) in DMF at 0° C. was added5-hydroxyisoindolin-1-one (2.0 g, 13.4 mmol) in portions. The resultingslurry was allowed to warm to room temp. and was stirred for 45 min.,then 4-fluoro-1-nitrobenzene was added and then mixture was heated at70° C. for 3 h. The mixture was cooled to 0° C. and treated with waterdropwise until a precipitate formed. The resulting solids were collectedto give 4-(1-isoindolinon-5-yloxy)-1-nitrobenzene as a dark yellow solid(3.23 g, 89%): TLC (100% EtOAc) R_(f) 0.35.

Step 3. Synthesis of 4-(1-oxoisoindolin-5-yloxy)aniline

A slurry of 4-(1-isoindolinon-5-yloxy)-1-nitrobenzene (2.12 g, 7.8 mmol)and 10% Pd/C (0.20 g) in EtOH (50 mL) was stirred under an H₂ atmosphere(balloon) for 4 h, then filtered through a pad of Celite®. The filtratewas concentrated under reduced pressure to afford4-(1-oxoisoindolin-5-yloxy)aniline as a dark yellow solid: TLC (100%EtOAc) R_(f) 0.15.

A13. General Method for the Synthesis of ω-Carbamoyl Anilines viaEDCI-Mediated Amide Formation Followed by Nitroarene Reduction Synthesisof 4-(3-N-Methylcarbamoylphenoxy)aniline

Step 1. Synthesis of 4-(3-ethoxycarbonylphenoxy)-1-nitrobenzene

A mixture of 4-fluoro-1-nitrobenzene (16 mL, 150 mmol), ethyl3-hydroxybenzoate 25 g, 150 mmol) and K₂CO₃ (41 g, 300 mmol) in DMF (125mL) was heated at the reflux temp. overnight, cooled to room temp. andtreated with water (250 mL). The resulting mixture was extracted withEtOAc (3×150 mL). The combined organic phases were sequentially washedwith water (3×100 mL) and a saturated NaCl solution (2×100 mL), dried(Na₂SO₄) and concentrated under reduced pressure. The residue waspurified by column chromatography (10% EtOAc/90% hexane) to afford4-(3-ethoxycarbonylphenoxy)-1-nitrobenzene as an oil (38 g).

Step 2. Synthesis of 4-(1-isoindolinon-5-yloxy)-1-nitrobenzene

To a slurry of NaH (0.39 g, 16.1 mmol) in DMF at 0° C. was added5-hydroxyisoindolin-1-one (2.0 g, 13.4 mmol) in portions. The resultingslurry was allowed to warm to room temp. and was stirred for 45 min.,then 4-fluoro-1-nitrobenzene was added and then the mixture was heatedat 70° C. for 3 h. The mixture was cooled to 0° C. and treated withwater dropwise until a precipitate formed. The resulting solids werecollected to give 4-(1-isoindolinon-5-yloxy)-1-nitrobenzene as a darkyellow solid (3.23 g, 89%): TLC (100% EtOAc) R_(f) 0.35.

Step 3. Synthesis of 4-(3-(N-methylcarbamoyl)phenoxy)-1-nitrobenzene

A mixture of 4-(3-carboxyphenoxy)-1-nitrobenzene (3.72 g, 14.4 mmol),EDCI.HCl (3.63, 18.6 mmol), N-methylmorpholine (1.6 mL, 14.5 mmol) andmethylamine (2.0 M in THF; 8 mL, 16 mmol) in CH₂Cl₂ (45 mL) was stirredat room temp. for 3 d, then concentrated under reduced pressure. Theresidue was dissolved in EtOAc (50 mL) and the resulting mixture wasextracted with a 1M HCl solution (50 mL). The aqueous layer wasback-extracted with EtOAc (2×50 mL). The combined organic phases werewashed with a saturated NaCl solution (50 mL), dried (Na₂SO₄), andconcentrated under reduced pressure to give4-(3-(N-methylcarbamoyl)phenoxy)-1-nitrobenzene as an oil (1.89 g).

Step 4. Synthesis of 4-(3-(N-methylcarbamoyl)phenoxy)aniline

A slurry of 4-(3-(N-methylcarbamoyl)phenoxy)-1-nitrobenzene (1.89 g,6.95 mmol) and 5% Pd/C (0.24 g) in EtOAc (20 mL) was stirred under an H₂atm (balloon) overnight. The 1-5 resulting mixture was filtered througha pad of Celite® and concentrated under reduced pressure. The residuewas purified by column chromatography (5% MeOH/95% CH₂Cl₂). Theresulting oil solidified under vacuum overnight to give4-(3-(N-methylcarbamoyl)phenoxy)aniline as a yellow solid (0.95 g, 56%).

A14. General Method for the Synthesis of ω-Carbamoyl Anilines viaEDCI-Mediated Amide Formation Followed by Nitroarene Reduction Synthesisof 4-3-(5-Methylcarbamoyl)pyridyloxy)aniline

Step 1. Synthesis of 4-(3-(5-methoxycarbonyl)pyridyloxy)-1-nitrobenzene

To a slurry of NaH (0.63 g, 26.1 mmol) in DMF (20 mL) was added asolution of methyl 5-hydroxynicotinate (2.0 g, 13.1 mmol) in DMF (10mL). The resulting mixture was added to a solution of4-fluoronitrobenzene (1.4 mL, 13.1 mmol) in DMF (10 mL) and theresulting mixture was heated at 70° C. overnight, cooled to room temp.,and treated with MeOH (5 mL) followed by water (50 mL). The resultingmixture was extracted with EtOAc (100 mL). The organic phase wasconcentrated under reduced pressure. The residue was purified by columnchromatography (30% EtOAc/70% hexane) to afford4-(3-(5-methoxycarbonyl)pyridyloxy)-1-nitrobenzene (0.60 g).

Step 2. Synthesis of 4-(3-(5-methoxycarbonyl)pyridyloxy)aniline

A slurry of 4-(3-(5-methoxycarbonyl)pyridyloxy)-1-nitrobenzene (0.60 g,2.20 mmol) and 10% Pd/C in MeOH/EtOAc was stirred under an H₂ atmosphere(balloon) for 72 h. The resulting mixture was filtered and the filtratewas concentrated under reduced pressure. The residue was purified bycolumn chromatography (gradient from 10% EtOAc/90% hexane to 30%EtOAc/70% hexane to 50% EtOAc/50% hexane) to afford4-(3-(5-methoxycarbonyl)pyridyloxy)aniline (0.28 g, 60%): ¹H NMR (CDCl₃)δ 3.92 (s, 3H), 6.71 (d, 2H), 6.89 (d, 2H), 7.73 (, 1H), 8.51 (d, 1H),8.87 (d, 1H).

A15. Synthesis of an Aniline Via Electrophilic Nitration Followed byReduction Synthesis of 4-(3-Methylsulfamoylphenoxy)aniline

Step 1. Synthesis of N-methyl-3-bromobenzenesulfonamide

To a solution of 3-bromobenzenesulfonyl chloride (2.5 g, 11.2 mmol) inTHF (15 mL) at 0° C. was added methylamine (2.0 M in THF; 28 mL, 56mmol). The resulting solution was allowed to warm to room temp. and wasstirred at room temp. overnight. The resulting mixture was separatedbetween EtOAc (25 mL) and a 1 M HCl solution (25 mL). The aqueous phasewas back-extracted with EtOAc (2×25 mL). The combined organic phaseswere sequentially washed with water (2×25 mL) and a saturated NaClsolution (25 mL), dried (MgSO₄) and concentrated under reduced pressureto give N-methyl-3-bromobenzenesulfonamide as a white solid (2.8 g,99%).

Step 2. Synthesis of 4-(3-(N-methylsulfamoyl)phenyloxy)benzene

To a slurry of phenol (1.9 g, 20 mmol), K₂CO₃ (6.0 g, 40 mmol), and CuI(4 g, 20 mmol) in DMF (25 mL) was addedN-methyl-3-bromobenzenesulfonamide (2.5 g, 10 mmol), and the resultingmixture was stirred at the reflux temp. overnight, cooled to room temp.,and separated between EtOAc (50 mL) and a 1 N HCl solution (50 mL). Theaqueous layer was back-extracted with EtOAc (2×50 mL). The combinedorganic phases were sequentially washed with water (2×50 mL) and asaturated NaCl solution (50 mL), dried (MgSO₄), and concentrated underreduced pressure. The residual oil was purified by column chromatography(30% EtOAc/70% hexane) to give 4-(3-(N-methylsulfamoyl)phenyloxy)benzene(0.30 g).

Step 3. Synthesis of 4-(3-(N-methylsulfamoyl)phenyloxy)-1-nitrobenzene

To a solution of 4-(3-(N-methylsulfamoyl)phenyloxy)benzene (0.30 g, 1.14mmol) in TFA (6 mL) at −10° C. was added NaNO₂ (0.097 g, 1.14 mmol) inportions over 5 min. The resulting solution was stirred at −10° C. for 1h, then was allowed to warm to room temp., and was concentrated underreduced pressure. The residue was separated between EtOAc (10 mL) andwater (10 mL). The organic phase was sequentially washed with water (10mL) and a saturated NaCl solution (10 mL), dried (MgSO₄) andconcentrated under reduced pressure to give4-(3-(N-methylsulfamoyl)phenyloxy)-1-nitrobenzene (0.20 g). Thismaterial carried on to the next step without further purification.

Step 4. Synthesis of 4-(3-(N-methylsulfamoyl)phenyloxy)aniline

A slurry of 4-(3-(N-methylsulfamoyl)phenyloxy)-1-nitrobenzene (0.30 g)and 10% Pd/C (0.030 g) in EtOAc (20 mL) was stirred under an H₂atmosphere (balloon) overnight. The resulting mixture was filteredthrough a pad of Celite®. The filtrate was concentrated under reducedpressure. The residue was purified by column chromatography (30%EtOAc/70% hexane) to give 4-(3-(N-methylsulfamoyl)phenyloxy)aniline(0.070 g).

A16. Modification of ω-Ketones Synthesis of4-(4-(1-(N-methoxy)iminoethyl)phenoxyaniline HCl salt

To a slurry of 4-(4-acetylphenoxy)aniline HCl salt (prepared in a manneranalogous to Method A13, step 4; 1.0 g, 3.89 mmol) in a mixture of EtOH(10 mL) and pyridine (1.0 mL) was added O-methylhydroxylamine HCl salt(0.65 g, 7.78 mmol, 2.0 equiv.). The resulting solution was heated atthe reflux temperature for 30 min, cooled to room temperature andconcentrated under reduced pressure. The resulting solids weretriturated with water (10 mL) and washed with water to give4-(4-(1-(N-methoxy)iminoethyl)phenoxyaniline HCl salt as a yellow solid(0.85 g): TLC (50% EtOAc/50% pet. ether) R_(f) 0.78; ¹H NMR (DMSO-d₆) δ3.90 (s, 3H), 5.70 (s, 3H); HPLC-MS m/z 257 ((M+H)⁺).

A17. Synthesis of N-(ω-Silyloxyalkyl)amides Synthesis of4-(4-(2-(N-(2-Triisopropylsilyloxy)ethylcarbamoyl)pyridyloxyaniline

Step 1. 4-Chloro-N-(2-triisopropylsilyloxy)ethylpyridine-2-carboxamide

To a solution of 4-chloro-N-(2-hydroxyethyl)pyridine-2-carboxamide(prepared in a manner analogous to Method A2, Step 3b; 1.5 g, 7.4 mmol)in anh DMF (7 mL) was added triisopropylsilyl chloride (1.59 g, 8.2mmol, 1.1 equiv.) and imidazole (1.12 g, 16.4 mmol, 2.2 equiv.). Theresulting yellow solution was stirred for 3 h at room temp, then wasconcentrated under reduced pressure. The residue was separated betweenwater (10 mL) and EtOAc (10 mL). The aqueous layer was extracted withEtOAc (3×10 mL). The combined organic phases were dried (MgSO₄), andconcentrated under reduced pressure to afford4-chloro-2-(N-(2-triisopropylsilyloxy)ethyl)pyridinecarboxamide as anorange oil (2.32 g, 88%). This material was used in the next stepwithout further purification.

Step 2.4-(4-(2-(N-(2-Triisopropylsilyloxy)ethylcarbamoyl)pyridyloxyaniline

To a solution of 4-hydroxyaniline (0.70 g, 6.0 mmol) in anh DMF (8 mL)was added potassium tert-butoxide (0.67 g, 6.0 mmol, 1.0 equiv.) in oneportion causing an exotherm. When this mixture had cooled to roomtemperature, a solution of4-chloro-2-(N-(2-triisopropylsilyloxy)ethyl)pyridinecarboxamide (2.32 g,6 mmol, 1 equiv.) in DMF (4 mL) was added followed by K₂CO₃ (0.42 g, 3.0mmol, 0.50 equiv.). The resulting mixture was heated at 80° C.overnight. An additional portion of potassium tert-butoxide (0.34 g, 3mmol, 0.5 equiv.) was then added and the mixture was stirred at 80° C.an additional 4 h. The mixture was cooled to 0° C. with an ice/waterbath, then water (approx. 1 mL) was slowly added dropwise. The organiclayer was extracted with EtOAc (3×10 mL). The combined organic layerswere washed with a saturated NaCl solution (20 mL), dried (MgSO₄) andconcentrated under reduced pressure. The brown oily residue was purifiedby column chromatography (SiO₂; 30% EtOAc/70% pet ether) to afford4-(4-(2-(N-(2-triisopropylsilyloxy)ethylcarbamoyl)pyridyloxyaniline as aclear light brown oil (0.99 g, 38%).

A18. Synthesis of 2-Pryidinecarboxylate Esters via Oxidation of2-Methylpyridines Synthesis of4-(5-(2-methoxycarbonyl)pyridyloxy)aniline

Step 1. 4-(5-(2-Methyl)pyridyloxy)-1-nitrobenzene

A mixture of 5-hydroxy-2-methylpyridine (10.0 g, 91.6 mmol),1-fluoro-4-nitrobenzene (9.8 mL, 91.6 mmol, 1.0 equiv.), K₂CO₃ (25 g,183 mmol, 2.0 equiv.) in DMF (100 mL) was heated at the refluxtemperature overnight. The resulting mixture was cooled to roomtemperature, treated with water (200 mL), and extracted with EtOAc(3×100 mL). The combined organic layers were sequentially washed withwater (2×100 mL) and a saturated NaCl solution ((100 mL), dried (MgSO₄)and concentrated under reduced pressure to give4-(5-(2-methyl)pyridyloxy)-1-nitrobenzene as a brown solid (12.3 g).

Step 2. Synthesis of 4-(5-(2-Methoxycarbonyl)pyridyloxy)-1-nitrobenzene

A mixture of 4-(5-(2-methyl)pyridyloxy)-1-nitrobenzene (1.70 g, 7.39mmol) and selenium dioxide (2.50 g, 22.2 mmol, 3.0 equiv.) in pyridine(20 mL) was heated at the reflux temperature for 5 h, then cooled toroom temperature. The resulting slurry was filtered, then concentratedunder reduced pressure. The residue was dissolved in MeOH (100 mL). Thesolution was treated with a conc HCl solution (7 mL), then heated at thereflux temperature for 3 h, cooled to room temperature and concentratedunder reduced pressure. The residue was separated between EtOAc (50 mL)and a 1 N NaOH solution (50 mL). The aqueous layer was extracted withEtOAc (2×50 mL). The combined organic layers were sequentially washedwith water (2×50 mL) and a saturated NaCl solution (50 mL), dried(MgSO₄) and concentrated under reduced pressure. The residue waspurified by column chromatography (SiO₂; 50% EtOAc/50% hexane) to afford4-(5-(2-methoxycarbonyl)pyridyloxy)-1-nitrobenzene (0.70 g).

Step 3. Synthesis of 4-(5-(2-Methoxycarbonyl)pyridyloxy)aniline

A slurry of 4-(5-(2-methoxycarbonyl)pyridyloxy)-1-nitrobenzene (0.50 g)and 10% Pd/C (0.050 g) in a mixture of EtOAc (20 mL) and MeOH (5 mL) wasplaced under a H₂ atmosphere (balloon) overnight. The resulting mixturewas filtered through a pad of Celite®, and the filtrate was concentratedunder reduced pressure. The residue was purified by columnchromatography (SiO₂; 70% EtOAc/30% hexane) to give4-(5-(2-methoxycarbonyl)pyridyloxy)aniline (0.40 g).

A19. Synthesis of ω-Sulfonylphenyl Anilines Synthesis of4-(4-Methylsulfonylphenoxy)aniline

Step 1. 4-(4-Methylsulfonylphenoxy)-1-nitrobenzene: To a solution of4-(4-methylthiophenoxy)-1-nitrobenzene (2.0 g, 7.7 mmol) in CH₂Cl₂ (75mL) at 0° C. was slowly added m-CPBA (57-86%, 4.0 g), and the reactionmixture was stirred at room temperature for 5 h. The reaction mixturewas treated with a 1N NaOH solution (25 mL). The organic layer wassequentially washed with a 1N NaOH solution (25 mL), water (25 mL) and asaturated NaCl solution (25 mL), dried (MgSO₄), and concentrated underreduced pressure to give 4-(4-methylsulfonylphenoxy)-1-nitrobenzene as asolid (2.1 g).

Step 2. 4-(4-Methylsulfonylphenoxy)-1-aniline:4-(4-Methylsulfonylphenoxy)-1-nitrobenzene was reduced to the aniline ina manner analogous to that described in Method A18. step 3.

B. Synthesis of Urea Precursors B1. General Method for the Synthesis ofIsocyanates from Anilines Using CDI Synthesis of4-Bromo-3-(trifluoromethyl)phenyl Isocyanate

Step 1. Synthesis of 4-bromo-3-(trinfluoromethyl)aniline HCl salt

To a solution of 4-bromo-3-(trifluoromethyl)aniline (64 g, 267 mmol) inEt₂O (500 mL) was added an HCl solution (1 M in Et₂O; 300 mL) dropwiseand the resulting mixture was stirred at room temp. for 16 h. Theresulting pink-white precipitate was removed by filtration and washedwith Et₂O (50 mL) and to afford 4-bromo-3-(trifluoromethyl)aniline HClsalt (73 g, 98%).

Step 2. Synthesis of 4-bromo-3-(trifluoromethyl)phenyl isocyanate

A suspension of 4-bromo-3-(trifluoromethyl)aniline HCl salt (36.8 g, 133mmol) in toluene (278 mL) was treated with trichloromethyl chloroformatedropwise and the resulting mixture was heated at the reflux temp. for 18h. The resulting mixture was concentrated under reduced pressure. Theresidue was treated with toluene (500 mL), then concentrated underreduced pressure. The residue was treated with CH₂Cl₂ (500 mL), thenconcentrated under reduced pressure. The CH₂Cl₂ treatment/concentrationprotocol was repeated and resulting amber oil was stored at −20° C. for16 h, to afford 4-bromo-3-(trifluoromethyl)phenyl isocyanate as a tansolid (35.1 g, 86%): GC-MS m/z 265 (M⁺).

C. Methods of Urea Formation C1a. General Method for the Synthesis ofUreas by Reaction of an Isocyanate with an Aniline Synthesis ofN-(4-Chloro-3-(trifluoromethyl)phenyl)-N′-(4-(2-(N-methylcarbamoyl)-4-pyridyloxy)phenyl)Urea

A solution of 4-chloro-3-(trifluoromethyl)phenyl isocyanate (14.60 g,65.90 mmol) in CH₂Cl₂ (35 mL) was added dropwise to a suspension of4-(2-(N-methylcarbamoyl)-4-pyridyloxy)aniline (Method A2, Step 4; 16.0g, 65.77 mmol) in CH₂Cl₂ (35 mL) at 0° C. The resulting mixture wasstirred at room temp. for 22 h. The resulting yellow solids were removedby filtration, then washed with CH₂Cl₂ (2×30 mL) and dried under reducedpressure (approximately 1 mmHg) to affordN-(4-chloro-3-(trifluoromethyl)phenyl)-N′-(4-(2-(N-methylcarbamoyl)-4-pyridyloxy)phenyl)ureaas an off-white solid (28.5 g, 93%): mp 207-209° C.; ¹H-NMR (DMSO-d₆) δ2.77 (d, J=4.8 Hz, 3H), 7.16 (m, 3H), 7.37 (d, J=2.5 Hz, 1H), 7.62 (m,4H), 8.11 (d, J=2.5 Hz, 1H), 8.49 (d, J=5.5 Hz, 1H), 8.77 (br d, 1H),8.99 (s, 1H), 9.21 (s, 1H); HPLC ES-MS m/z 465 ((M+H)⁺).

C1b. General Method for the Synthesis of Ureas by Reaction of anIsocyanate with an Aniline Synthesis ofN-(4-Bromo-3-(trifluoromethyl)phenyl)-N′-(4-(2-(N-methylcarbamoyl)-4-pyridyloxy)phenyl)Urea

A solution of 4-bromo-3-(trifluoromethyl)phenyl isocyanate (Method B1,Step 2; 8.0 g, 30.1 mmol) in CH₂Cl₂ (80 mL) was added dropwise to asolution of 4-(2-(N-methylcarbamoyl)-4-pyridyloxy)aniline (Method A2,Step 4; 7.0 g, 28.8 mmol) in CH₂Cl₂ (40 mL) at 0° C. The resultingmixture was stirred at room temp. for 16 h. The resulting yellow solidswere removed by filtration, then washed with CH₂Cl₂ (2×50 mL) and driedunder reduced pressure (approximately 1 mmHg) at 40° C. to affordN-(4-bromo-3-(trifluoromethyl)phenyl)-N′-(4-(2-(N-methylcarbamoyl)-4-pyridyloxy)phenyl)ureaas a pale-yellow solid (13.2 g, 90%): mp 203-205° C.; ¹H-NMR (DMSO-d₆) δ2.77 (d, J=4.8 Hz, 3H), 7.16 (m, 3H), 7.37 (d, J=2.5 Hz, 1H), 7.58 (m,3H), 7.77 (d, J=8.8 Hz, 1H), 8.11 (d, J=2.5 Hz, 1H), 8.49 (d, J=5 Hz,1H), 8.77 (br d, 1H), 8.99 (s, 1H), 9.21 (s, 1H); HPLC ES-MS m/z 509((M+H)⁻).

C1c. General Method for the Synthesis of Ureas by Reaction of anIsocyanate with an Aniline Synthesis ofN-(4-Chloro-3-(trifluoromethyl)phenyl)-N′-(2-methyl-4-(2-(N-methylcarbamoyl)(4-pyridyloxy))phenyl)Urea

A solution of 2-methyl-4-(2-(N-methylcarbamoyl)(4-pyridyloxy))aniline(Method A5; 0.11 g, 0.45 mmol) in CH₂Cl₂ (1 mL) was treated with Et₃N(0.16 mL) and 4-chloro-3-(trifluoromethyl)phenyl isocyanate (0.10 g,0.45 mmol). The resulting brown solution was stirred at room temp. for 6d, then was treated with water (5 mL). The aqueous layer wasback-extracted with EtOAc (3×5 mL). The combined organic layers weredried (MgSO₄) and concentrated under reduced pressure to yieldN-(4-chloro-3-(trifluoromethyl)phenyl)-N′-(2-methyl-4-(2-(N-methylcarbamoyl)(4-pyridyloxy))phenyl)ureaas a brown oil (0.11 g, 0.22 mmol): ¹H NMR (DMSO-d₆) δ 2.27 (s, 3H),2.77 (d, J=4.8 Hz, 3H), 7.03 (dd, J=8.5, 2.6 Hz, 1H), 7.11 (d, J=2.9 Hz,1H), 7.15 (dd, J=5.5, 2.6, Hz, 1H), 7.38 (d, J=2.6 Hz, 1H), 7.62 (app d,J=2.6 Hz, 2H), 7.84 (d, J=8.8 Hz, 1H), 8.12 (s, 1H), 8.17 (s, 1H); 8.50(d, J=5.5 Hz, 1H), 8.78 (q, J=5.2, 1H), 9.52 (s, 1H); HPLC ES-MS m/z 479((M+H)⁺).

C1d. General Method for the Synthesis of Ureas by Reaction of anIsocyanate with an Aniline Synthesis ofN-(4-Chloro-3-(trifluoromethyl)phenyl)-N′-(4-aminophenyl)Urea

To a solution of 4-chloro-3-(trifluoromethyl)phenyl isocyanate (2.27 g,10.3 mmol) in CH₂Cl₂ (308 mL) was added p-phenylenediamine (3.32 g, 30.7mmol) in one part. The resulting mixture was stirred at room temp. for 1h, treated with CH₂Cl₂ (100 mL), and concentrated under reducedpressure. The resulting pink solids were dissolved in a mixture of EtOAc(110 mL) and MeOH (15 mL), and the clear solution was washed with a 0.05N HCl solution. The organic layer was concentrated under reducedpressure to afford impureN-(4-chloro-3-(trifluoromethyl)phenyl)-N′-(4-aminophenyl)urea (3.3 g):TLC (100% EtOAc) R_(f) 0.72.

C1e. General Method for the Synthesis of Ureas by Reaction of anIsocyanate with an Aniline Synthesis ofN-(4-Chloro-3-(trifluoromethyl)phenyl)-N′-(4-ethoxycarbonylphenyl)Urea

To a solution of ethyl 4-isocyanatobenzoate (3.14 g, 16.4 mmol) inCH₂Cl₂ (30 mL) was added 4-chloro-3-(trifluoromethyl)aniline (3.21 g,16.4 mmol), and the solution was stirred at room temp. overnight. Theresulting slurry was diluted with CH₂Cl₂ (50 mL) and filtered to affordN-(4-chloro-3-(trifluoromethyl)phenyl)-N′-(4-ethoxycarbonylphenyl)ureaas a white solid (5.93 g, 97%): TLC (40% EtOAc/60% hexane) R_(f) 0.44.

C1f. General Method for the Synthesis of Ureas by Reaction of anIsocyanate with an Aniline Synthesis ofN-(4-Chloro-3-(trifluoromethyl)phenyl)-N′-(3-carboxyphenyl)Urea

To a solution of 4-chloro-3-(trifluoromethyl)phenyl isocyanate (1.21 g,5.46 mmol) in CH₂Cl₂ (8 mL) was added 4-(3-carboxyphenoxy)aniline(Method A11; 0.81 g, 5.76 mmol) and the resulting mixture was stirred atroom temp. overnight, then treated with MeOH (8 mL), and stirred anadditional 2 h. The resulting mixture was concentrated under reducedpressure. The resulting brown solids were triturated with a 1:1EtOAc/hexane solution to giveN-(4-chloro-3-(trifluoromethyl)phenyl)-N′-(3-carboxyphenyl)urea as anoff-white solid (1.21 g, 76%).

C2a. General Method for Urea Synthesis by Reaction of an Aniline withN,N′-Carbonyl Diimidazole Followed by Addition of a Second AnilineSynthesis ofN-(2-Methoxy-5-(trifluoromethyl)phenyl)-N′-(4-(2-(N-methylcarbamoyl)-4-pyridyloxy)phenyl)Urea

To a solution of 2-methoxy-5-(trifluoromethyl)aniline (0.15 g) in anhCH₂Cl₂ (15 mL) at 0° C. was added CDI (0.13 g). The resulting solutionwas allowed to warm to room temp. over 1 h, was stirred at room temp.for 16 h, then was treated with4-(2-(N-methylcarbamoyl)-4-pyridyloxy)aniline (0.18 g). The resultingyellow solution was stirred at room temp. for 72 h, then was treatedwith H₂O (125 mL). The resulting aqueous mixture was extracted withEtOAc (2×150 mL). The combined organics were washed with a saturatedNaCl solution (100 mL), dried (MgSO₄) and concentrated under reducedpressure. The residue was triturated (90% EtOAc/10% hexane). Theresulting white solids were collected by filtration and washed withEtOAc. The filtrate was concentrated under reduced pressure and theresidual oil purified by column chromatography (gradient from 33%EtOAc/67% hexane to 50% EtOAc/50% hexane to 100% EtOAc) to giveN-(2-methoxy-5-(trifluoromethyl)phenyl)-N′-(4-(2-(N-methylcarbamoyl)-4-pyridyloxy)phenyl)ureaas a light tan solid (0.098 g, 30%): TLC (100% EtOAc) R_(f) 0.62; ¹H NMR(DMSO-d₆) δ 2.76 (d, J=4.8 Hz, 3H), 3.96 (s, 3H), 7.1-7.6 and 8.4-8.6(m, 1H), 8.75 (d, J=4.8 Hz, 1H), 9.55 (s, 1H); FAB-MS m/z 461 ((M+H)⁺).

C2b. General Method for Urea Synthesis by Reaction of an Aniline withN,N′-Carbonyl Diimidazole Followed by Addition of a Second AnilineSymmetrical Urea's as Side Products of a N,N′-Carbonyl DiimidazoleReaction Procedure Synthesis ofBis(4-(2-(N-methylcarbamoyl)-4-pyridyloxy)phenyl)Urea

To a stirring solution of 3-amino-2-methoxyquinoline (0.14 g) inanhydrous CH₂Cl₂ (15 mL) at 0 C was added CDI (0.13 g). The resultingsolution was allowed to warm to room temp. over 1 h then was stirred atroom temp. for 16 h. The resulting mixture was treated with4-(2-(N-methylcarbamoyl)-4-pyridyloxy)aniline (0.18 g). The resultingyellow solution stirred at room temp. for 72 h, then was treated withwater (125 mL). The resulting aqueous mixture was extracted with EtOAc(2×150 mL). The combined organic phases were washed with a saturatedNaCl solution (100 ml), dried (MgSO₄) and concentrated under reducedpressure. The residue was triturated (90% EtOAc/10% hexane). Theresulting white solids were collected by filtration and washed withEtOAc to give bis(4-(2-(N-methylcarbamoyl)-4-pyridyloxy)phenyl)urea(0.081 g, 44%): TLC (100% EtOAc) R_(f) 0.50; ¹H NMR (DMSO-d₆) δ 2.76 (d,J=5.1 Hz, 6H), 7.1-7.6 (m, 12H), 8.48 (d, J=5.4 Hz, 1H), 8.75 (d, J=4.8Hz, 2H), 8.86 (s, 2H); HPLC ES-MS m/z 513 ((M+H)⁺).

C2c. General Method for the Synthesis of Ureas by Reaction of anIsocyanate with an Aniline Synthesis ofN-(2-Methoxy-5-(trifluoromethyl)phenyl-N′-(4-(1,3-dioxoisoindolin-5-yloxy)phenyl)Urea

To a stirring solution of 2-methoxy-5-(trifluoromethyl)phenyl isocyanate(0.10 g, 0.47 mmol) in CH₂Cl₂ (1.5 mL) was added5-(4-aminophenoxy)isoindoline-1,3-dione (Method A3, Step 3; 0.12 g, 0.47mmol) in one portion. The resulting mixture was stirred for 12 h, thenwas treated with CH₂Cl₂ (10 mL) and MeOH (5 mL). The resulting mixturewas sequentially washed with a 1N HCl solution (15 mL) and a saturatedNaCl solution (15 mL), dried (MgSO₄) and concentrated under reducedpressure to affordN-(2-methoxy-5-(trifluoromethyl)phenyl-N′-(4-(1,3-dioxoisoindolin-5-yloxy)phenyl)ureaas a white solid (0.2 g, 96%): TLC (70% EtOAc/30% hexane) R_(f) 0.50; ¹HNMR (DMSO-d₆) δ 3.95 (s, 3H), 7.31-7.10 (m, 6H), 7.57 (d, J=9.3 Hz, 2H),7.80 (d, J=8.7 Hz, 1H), 8.53 (br s, 2H), 9.57 (s, 1H), 11.27 (br s, 1H);HPLC ES-MS 472.0 ((M+H)⁺, 100%).

C2d. General Method for Urea Synthesis by Reaction of an Aniline withN,N′-Carbonyl Diimidazole Followed by Addition of a Second AnilineSynthesis ofN-(5-(tert-Butyl)-2-(2,5-dimethylpyrrolyl)phenyl)-N′-(4-(2-(N-methylcarbamoyl)-4-pyridyloxy)phenyl)Urea

To a stirring solution of CDI (0.21 g, 1.30 mmol) in CH₂Cl₂ (2 mL) wasadded 5-(tert-butyl)-2-(2,5-dimethylpyrrolyl)aniline (Method A4, Step 2;0.30 g, 1.24 mmol) in one portion. The resulting mixture was stirred atroom temp. for 4 h, then 4-(2-(N-methylcarbamoyl)-4-pyridyloxy)aniline(0.065 g, 0.267 mmol) was then added in one portion. The resultingmixture was heated at 36° C. overnight, then cooled to room temp. anddiluted with EtOAc (5 mL). The resulting mixture was sequentially washedwith water (15 mL) and a 1N HCl solution (15 mL), dried (MgSO₄), andfiltered through a pad of silica gel (50 g) to affordN-(5-(tert-butyl)-2-(2,5-dimethylpyrrolyl)phenyl)-N-(4-(2-(N-methylcarbamoyl)-4-pyridyloxy)phenyl)ureaas a yellowish solid (0.033 g, 24%): TLC (40% EtOAc/60% hexane) R_(f)0.24; ¹H NMR (acetone-d₆) δ 1.37 (s, 9H), 1.89 (s, 6H), 2.89 (d, J=4.8Hz, 3H), 5.83 (s, 2H), 6.87-7.20 (m, 6H), 7.17 (dd, 1H), 7.51-7.58 (m,3H), 8.43 (d, J=5.4 Hz, 1H), 8.57 (d, J=2.1 Hz, 1H), 8.80 (br s, 1H);HPLC ES-MS 512 ((M+H)⁺, 100%).

C3. Combinatorial Method for the Synthesis of Diphenyl Ureas UsingTriphosgene

One of the anilines to be coupled was dissolved in dichloroethane (0.10M). This solution was added to a 8 mL vial (0.5 mL) containingdichloroethane (1 mL). To this was added a bis(trichloromethyl)carbonate solution (0.12 M in dichloroethane, 0.2 mL, 0.4 equiv.),followed by diisopropylethylamine (0.35 M in dichloroethane, 0.2 mL, 1.2equiv.). The vial was capped and heated at 80° C. for 5 h, then allowedto cool to room temp for approximately 10 h. The second aniline wasadded (0.10 M in dichloroethane, 0.5 mL, 1.0 equiv.), followed bydiisopropylethylamine (0.35 M in dichloroethane, 0.2 mL, 1.2 equiv.).The resulting mixture was heated at 80° C. for 4 h, cooled to roomtemperature and treated with MeOH (0.5 mL). The resulting mixture wasconcentrated under reduced pressure and the products were purified byreverse phase HPLC.

C4. General Method for Urea Synthesis by Reaction of an Aniline withPhosgene Followed by Addition of a Second Aniline Synthesis ofN-(2-Methoxy-5-(trifluoromethyl)phenyl)-N′-(4-(2-(N-methylcarbamoyl)-4-pyridyloxy)phenyl)Urea

To a stirring solution of phosgene (1.9 M in toluene; 2.07 mL 0.21 g,1.30 mmol) in CH₂Cl₂ (20 mL) at 0° C. was added anh pyridine (0.32 mL)followed by 2-methoxy-5-(trifluoromethyl)aniline (0.75 g). The yellowsolution was allowed to warm to room temp during which a precipitateformed. The yellow mixture was stirred for 1 h, then concentrated underreduced pressure. The resulting solids were treated with anh toluene (20mL) followed by 4-(2-(N-methylcarbamoyl)-4-pyridyloxy)aniline (preparedas described in Method A2; 0.30 g) and the resulting suspension washeated at 80° C. for 20 h, then allowed to cool to room temp. Theresulting mixture was diluted with water (100 mL), then was made basicwith a saturated NaHCO₃ solution (2-3 mL). The basic solution wasextracted with EtOAc (2×250 mL). The organic layers were separatelywashed with a saturated NaCl solution, combined, dried (MgSO₄), andconcentrated under reduced pressure. The resulting pink-brown residuewas dissolved in MeOH and absorbed onto SiO₂ (100 g). Columnchromatography (300 g SiO₂; gradient from 1% Et₃N/33% EtOAc/66% hexaneto 1% Et₃N/99% EtOAc to 1% Et₃N/20% MeOH/79% EtOAc) followed byconcentration under reduced pressure at 45° C. gave a warm concentratedEtOAc solution, which was treated with hexane (10 mL) to slowly formcrystals ofN-(2-methoxy-5-(trifluoromethyl)phenyl)-N′-(4-(2-(N-methylcarbamoyl)-4-pyridyloxy)phenyl)urea(0.44 g): TLC (1% Et₃N/99% EtOAc) R_(f) 0.40.

D. Interconversion of Ureas D1a. Conversion of ω-Aminophenyl Ureas intoω-Arylamino)phenyl Ureas Synthesis ofN-(4-Chloro-3-((trifluoromethyl)phenyl)-N′-(4-(3-methoxycarbonylphenyl)carboxyaminophenyl)Urea

To a solution ofN-(4-chloro-3-((trifluoromethyl)phenyl)-N′-(4-aminophenyl)urea (MethodC1d; 0.050 g, 1.52 mmol), mono-methyl isophthalate (0.25 g, 1.38 mmol),HOBT-H₂O (0.41 g, 3.03 mmol) and N-methylmorpholine (0.33 mL, 3.03 mmol)in DMF (8 mL) was added EDCI.HCl (0.29 g, 1.52 mmol). The resultingmixture was stirred at room temp. overnight, diluted with EtOAc (25 mL)and sequentially washed with water (25 mL) and a saturated NaHCO₃solution (25 mL). The organic layer was dried (Na₂SO₄) and concentratedunder reduced pressure. The resulting solids were triturated with anEtOAc solution (80% EtOAc/20% hexane) to giveN-(4-chloro-3-((trifluoromethyl)phenyl)-N′-(4-(3-methoxycarbonylphenyl)carboxyaminophenyl)urea(0.27 g, 43%): mp 121-122; TLC (80% EtOAc/20% hexane) R_(f) 0.75.

D1b. Conversion of ω-Carboxyphenyl Ureas into ω-(Arylcarbamoyl)phenylUreas Synthesis ofN-(4-Chloro-3-((trifluoromethyl)phenyl)-N′-(4-(3-methylcarbamoylphenyl)carbamoylphenyl)Urea

To a solution ofN-(4-chloro-3-((trifluoromethyl)phenyl)-N′-(4-(3-methylcarbamoylphenyl)carboxyaminophenyl)urea (0.14 g, 0.48 mmol), 3-methylcarbamoylaniline(0.080 g, 0.53 mmol), HOBT-H₂O (0.14 g, 1.07 mmol), andN-methylmorpholine (0.5 mL, 1.07 mmol) in DMF (3 mL) at 0° C. was addedEDCI.HCl (0.10 g, 0.53 mmol). The resulting mixture was allowed to warmto room temp. and was stirred overnight. The resulting mixture wastreated with water (10 mL), and extracted with EtOAc (25 mL). Theorganic phase was concentrated under reduced pressure. The resultingyellow solids were dissolved in EtOAc (3 mL) then filtered through a padof silica gel (17 g, gradient from 70% EtOAc/30% hexane to 10% MeOH/90%EtOAc) to giveN-(4-chloro-3-((trifluoromethyl)phenyl)-N′-(4-(3-methylcarbamoylphenyl)carbamoylphenyl)ureaas a white solid (0.097 g, 41%): mp 225-229; TLC (100% EtOAc) R_(f)0.23.

D1c. Combinatorial Approach to the Conversion of ω-Carboxyphenyl Ureasinto ω-(Arylcarbamoyl)phenyl Ureas Synthesis ofN-(4-Chloro-3-((trifluoromethyl)phenyl)-N′-(4-(N-(3-(N-(3-pyridyl)carbamoyl)phenyl)carbamoyl)phenyl)Urea

A mixture ofN-(4-chloro-3-((trifluoromethyl)phenyl)-N′-(3-carboxyphenyl)urea (MethodC1f; 0.030 g, 0.067 mmol) andN-cyclohexyl-N′-(methylpolystyrene)carbodiimide (55 mg) in1,2-dichloroethane (1 mL) was treated with a solution of 3-aminopyridinein CH₂Cl₂ (1 M; 0.074 mL, 0.074 mmol). (In cases of insolubility orturbidity, a small amount of DMSO was also added.) The resulting mixturewas heated at 36° C. overnight. Turbid reactions were then treated withTHF (1 mL) and heating was continued for 18 h. The resulting mixtureswere treated with poly(4-(isocyanatomethyl)styrene) (0.040 g) and theresulting mixture was stirred at 36° C. for 72 h, then cooled to roomtemp. and filtered. The resulting solution was filtered through a plugof silica gel (1 g). Concentration under reduced pressure affordedN-(4-chloro-3-((trifluoromethyl)phenyl)-N′-(4-(N-(3-(N-(3-pyridyl)carbamoyl)phenyl)carbamoyl)phenyl)urea(0.024 g, 59%): TLC (70% EtOAc/30% hexane) R_(f) 0.12.

D2. Conversion of ω-Carboalkoxyaryl Ureas into ω-Carbamoylaryl UreasSynthesis ofN-(4-Chloro-3-((trifluoromethyl)phenyl)-N′-(4-(3-methylcarbamoylphenyl)carboxyaminophenyl)Urea

To a sample ofN-(4-chloro-3-((trifluoromethyl)phenyl)-N′-(4-(3-carbomethoxyphenyl)carboxyaminophenyl)urea (0.17 g, 0.34 mmol) was added methylamine (2 Min THF; 1 mL, 1.7 mmol) and the resulting mixture was stirred at roomtemp. overnight, then concentrated under reduced pressure to giveN-(4-chloro-3-((trifluoromethyl)phenyl)-N′-(4-(3-methylcarbamoylphenyl)carboxyaminophenyl)ureaas a white solid: mp 247; TLC (100% EtOAc) R_(f) 0.35.

D3. Conversion of ω-Carboalkoxyaryl Ureas into ω-Carboxyaryl UreasSynthesis ofN-(4-Chloro-3-((trifluoromethyl)phenyl)-N′-(4-carboxyphenyl)Urea

To a slurry ofN-(4-chloro-3-((trifluoromethyl)phenyl)-N-(4-ethoxycarbonylphenyl)urea(Method C1e; 5.93 g, 15.3 mmol) in MeOH (75 mL) was added an aqueous KOHsolution (2.5 N, 10 mL, 23 mmol). The resulting mixture was heated atthe reflux temp. for 12 h, cooled to room temp., and concentrated underreduced pressure. The residue was diluted with water (50 mL), thentreated with a 1 N HCl solution to adjust the pH to 2 to 3. Theresulting solids were collected and dried under reduced pressure to giveN-(4-chloro-3-((trifluoromethyl)phenyl)-N′-(4-carboxyphenyl)urea as awhite solid (5.05 g, 92%).

D4. General Method for the Conversion of ω-Alkoxy Esters into ω-AlkylAmides Synthesis ofN-(4-Chloro-3-((trifluoromethyl)phenyl)-N′-((4-(3-(5-(2-dimethylaminoethyl)carbamoyl)pyridyl)oxyphenyl)Urea

Step 1. Synthesis ofN-(4-Chloro-3-(trifluoromethyl)phenyl)-N′-((4-(3-(5-carboxypyridyl)oxyphenyl)Urea

N-(4-Chloro-3-(trifluoromethyl)phenyl)-N′-((4-(3-(5-methoxycarbonylpyridyl)oxyphenyl)ureawas synthesized from 4-chloro-3-(trifluoromethyl)phenyl isocyanate and4-(3-(5-methoxycarbonylpyridyl)oxyaniline (Method A14, Step 2) in amanner analogous to Method C1a. A suspension ofN-(4-chloro-3-(trifluoromethyl)phenyl)-N′-((4-(3-(5-methoxycarbonylpyridyl)oxyphenyl)urea(0.26 g, 0.56 mmol) in MeOH (10 mL) was treated with a solution of KOH(0.14 g, 2.5 mmol) in water (1 mL) and was stirred at room temp. for 1h. The resulting mixture was adjusted to pH 5 with a 1 N HCl solution.The resulting precipitate was removed by filtration and washed withwater. The resulting solids were dissolved in EtOH (10 mL) and theresulting solution was concentrated under reduced pressure. TheEtOH/concentration procedure was repeated twice to giveN-(4-chloro-3-(trifluoromethyl)phenyl)-N′-((4-(3-(5-carboxypyridyl)oxyphenyl)urea(0.18 g, 71%).

Step 2. Synthesis ofN-(4-chloro-3-(trifluoromethyl)phenyl)-N′-((4-(3-(5-(2-dimethylaminoethyl)carbamoyl)pyridyl)oxyphenyl)urea

A mixture ofN-(4-chloro-3-(trifluoromethyl)phenyl)-N′-((4-(3-(5-carboxypyridyl)oxyphenyl)urea(0.050 g, 0.011 mmol), N,N-dimethylethylenediamine (0.22 mg, 0.17 mmol),HOBT (0.028 g, 0.17 mmol), N-methylmorpholine (0.035 g, 0.28 mmol), andEDCI.HCl (0.032 g, 0.17 mmol) in DMF (2.5 mL) was stirred at room temp.overnight. The resulting solution was separated between EtOAc (50 mL)and water (50 mL). The organic phase was washed with water (35 mL),dried (MgSO₄) and concentrated under reduced pressure. The residue wasdissolved in a minimal amount of CH₂Cl₂ (approximately 2 mL). Theresulting solution was treated with Et₂O dropwise to giveN-(4-chloro-3-(trifluoromethyl)phenyl)-N′-((4-(3-(5-(2-dimethylaminoethyl)carbamoyl)pyridyl)oxyphenyl)ureaas a white precipitate (0.48 g, 84%: ¹H NMR (DMSO-d₆) δ 2.10 s, 6H),3.26 (s, H), 7.03 (d, 2H), 7.52 (d, 2H), 7.60 (m, 3H), 8.05 (s, 1H),8.43 (s, 1H), 8.58 (t, 1H), 8.69 (s, 1H), 8.90 (s, 1H), 9.14 (s, 1H);HPLC ES-MS m/z 522 ((M+H)⁺).

D5. General Method for the Deprotection of N-(ω-Silyloxyalkyl)amidesSynthesis ofN-(4-Chloro-3-((trifluoromethyl)phenyl)-N′-(4-(4-(2-(N-(2-hydroxy)ethylcarbamoyl)pyridyloxyphenyl)Urea

To a solution ofN-(4-chloro-3-((trifluoromethyl)phenyl)-N′-(4-(4-(2-(N-(2-triisopropylsilyloxy)ethylcarbamoyl)pyridyloxyphenyl)urea(prepared in a manner analogous to Method C1a; 0.25 g, 0.37 mmol) in anhTHF (2 mL) was tetrabutylammonium fluoride (1.0 M in THF; 2 mL). Themixture was stirred at room temperature for 5 min, then was treated withwater (10 mL). The aqueous mixture was extracted with EtOAc (3×10 mL).The combined organic layers were dried (MgSO₄) and concentrated underreduced pressure. The residue was purified by column chromatography(SiO₂; gradient from 100% hexane to 40% EtOAc/60% hexane) to giveN-(4-chloro-3-((trifluoromethyl)phenyl)-N′-(4-(4-(2-(N-(2-hydroxy)ethylcarbamoyl)pyridyloxyphenyl)ureaas a white solid (0.019 g, 10%).

Listed below are compounds listed in the Tables below which have beensynthesized according to the Detailed Experimental Procedures givenabove:

Syntheses of Exemplified Compounds See Tables for CompoundCharacterization

Entry 1: 4-(3-N-Methylcarbamoylphenoxy)aniline was prepared according toMethod A13. According to Method C3,3-tert-butylaniline was reacted withbis(trichloromethyl)carbonate followed by4-(3-N-Methylcarbamoylphenoxy)aniline to afford the urea.

Entry 2: 4-Fluoro-1-nitrobenzene and p-hydroxyacetophenone were reactedaccording to Method A13, Step 1 to afford the4-(4-acetylphenoxy)-1-nitrobenzene. 4-(4-Acetylphenoxy)-1-nitrobenzenewas reduced according to Method A13, Step 4 to afford4-(4-acetylphenoxy)aniline. According to Method C3,3-tert-butylanilinewas reacted with bis(trichloromethyl) carbonate followed by4-(4-acetylphenoxy)aniline to afford the urea.

Entry 3: According to Method C2d, 3-tert-butylaniline was treated withCDI, followed by 4-(3-N-methylcarbamoyl)-4-methoxyphenoxy)aniline, whichhad been prepared according to Method A8, to afford the urea.

Entry 4: 5-tert-Butyl-2-methoxyaniline was converted to5-tert-butyl-2-methoxyphenyl isocyanate according to Method B1.4-(3-N-Methylcarbamoylphenoxy)aniline, prepared according to Method A13,was reacted with the isocyanate according to Method C1a to afford theurea.

Entry 5: According to Method C2d, 5-tert-butyl-2-methoxyaniline wasreacted with CDI followed by4-(3-N-methylcarbamoyl)-4-methoxyphenoxy)aniline, which had beenprepared according to Method A8, to afford the urea.

Entry 6: 5-(4-Aminophenoxy)isoindoline-1,3-dione was prepared accordingto Method A3. According to Method 2d, 5-tert-butyl-2-methoxyaniline wasreacted with CDI followed by 5-(4-aminophenoxy)isoindoline-1,3-dione toafford the urea.

Entry 7: 4-(1-Oxoisoindolin-5-yloxy)aniline was synthesized according toMethod A12. According to Method 2d, 5-tert-butyl-2-methoxyaniline wasreacted with CDI followed by 4-(1-oxoisoindolin-5-yloxy)aniline toafford the urea.

Entry 8: 4-(3-N-Methylcarbamoylphenoxy)aniline was synthesized accordingto Method A13. According to Method C2a,2-methoxy-5-(trifluoromethyl)aniline was reacted with CDI followed by4-(3-N-methylcarbamoylphenoxy)aniline to afford the urea.

Entry 9: 4-Hydroxyacetophenone was reacted with 2-chloro-5-nitropyridineto give 4-(4-acetylphenoxy)-5-nitropyridine according to Method A3, Step2. According to Method A8, Step 4,4-(4-acetylphenoxy)-5-nitropyridinewas reduced to 4-(4-acetylphenoxy)-5-aminopyridine.2-Methoxy-5-(trifluoromethyl)aniline was converted to2-methoxy-5-(trifluoromethyl)phenyl isocyanate according to Method B1.The isocyanate was reacted with 4-(4-acetylphenoxy)-5-aminopyridineaccording to Method C1a to afford the urea.

Entry 10: 4-Fluoro-1-nitrobenzene and p-hydroxyacetophenone were reactedaccording to Method A13, Step 1 to afford the4-(4-acetylphenoxy)-1-nitrobenzene. 4-(4-Acetylphenoxy)-1-nitrobenzenewas reduced according to Method A13, Step 4 to afford4-(4-acetylphenoxy)aniline. According to MethodC3,5-(trifluoromethyl)-2-methoxybutylaniline was reacted withbis(trichloromethyl) carbonate followed by 4-(4-acetylphenoxy)aniline toafford the urea.

Entry 11: 4-Chloro-N-methyl-2-pyridinecarboxamide, which was synthesizedaccording to Method A2, Step 3a, was reacted with 3-aminophenolaccording to Method A2, Step 4 using DMAC in place of DMF to give3-(-2-(N-methylcarbamoyl)-4-pyridyloxy)aniline. According to MethodC4,2-methoxy-5-(trifluoromethyl)aniline was reacted with phosgenefollowed by 3-(-2-(N-methylcarbamoyl)-4-pyridyloxy)aniline to afford theurea.

Entry 12: 4-Chloropyridine-2-carbonyl chloride HCl salt was reacted withammonia according to Method A2, Step 3b to form4-chloro-2-pyridinecarboxamide. 4-Chloro-2-pyridinecarboxamide wasreacted with 3-aminophenol according to Method A2, Step 4 using DMAC inplace of DMF to give 3-(2-carbamoyl-4-pyridyloxy)aniline. According toMethod C2a, 2-methoxy-5-(trifluoromethyl)aniline was reacted withphosgene followed by 3-(2-carbamoyl-4-pyridyloxy)aniline to afford theurea.

Entry 13: 4-Chloro-N-methyl-2-pyridinecarboxamide was synthesizedaccording to Method A2, Step 3b. 4-Chloro-N-methyl-2-pyridinecarboxamidewas reacted with 4-aminophenol according to Method A2, Step 4 using DMACin place of DMF to give 4-(2-(N-methylcarbamoyl)-4-pyridyloxy)aniline.According to Method C2a, 2-methoxy-5-(trifluoromethyl)aniline wasreacted with CDI followed by4-(2-(N-methylcarbamoyl)-4-pyridyloxy)aniline to afford the urea.

Entry 14: 4-Chloropyridine-2-carbonyl chloride HCl salt was reacted withammonia according to Method A2, Step 3b to form4-chloro-2-pyridinecarboxamide. 4-Chloro-2-pyridinecarboxamide wasreacted with 4-aminophenol according to Method A2. Step 4 using DMAC inplace of DMF to give 4-(2-carbamoyl-4-pyridyloxy)aniline. According toMethod C4,2-methoxy-5-(trifluoromethyl)aniline was reacted with phosgenefollowed by 4-(2-carbamoyl-4-pyridyloxy)aniline to afford the urea.

Entry 15: According to Method C2d, 5-(trifluoromethyl)-2-methoxyanilinewas reacted with CDI followed by4-(3-N-methylcarbamoyl)-4-methoxyphenoxy)aniline, which had beenprepared according to Method A8, to afford the urea.

Entry 16: 4-(2-(N-Methylcarbamoyl)-4-pyridyloxy)-2-methylaniline wassynthesized according to Method A5. 5-(Trifluoromethyl)-2-methoxyanilinewas converted into 5-(trifluoromethyl)-2-methoxyphenyl isocyanateaccording to Method B1. The isocyanate was reacted with4-(2-(N-methylcarbamoyl)-4-pyridyloxy)-2-methylaniline according toMethod C1c to afford the urea.

Entry 17: 4-(2-(N-Methylcarbamoyl)-4-pyridyloxy)-2-chloroaniline wassynthesized according to Method A6. 5-(Trifluoromethyl)-2-methoxyanilinewas converted into 5-(trifluoromethyl)-2-methoxyphenyl isocyanateaccording to Method B1. 5-(Trifluoromethyl)-2-methoxyphenyl isocyanatewas reacted with 4-(2-(N-methylcarbamoyl)-4-pyridyloxy)-2-chloroanilineaccording to Method C1a to afford the urea.

Entry 18: According to Method A2, Step 4,5-amino-2-methylphenol wasreacted with 4-chloro-N-methyl-2-pyridinecarboxamide, which had beensynthesized according to Method A2, Step 3b, to give3-(2-(N-methylcarbamoyl)-4-pyridyloxy)-4-methylaniline.5-(Trifluoromethyl)-2-methoxyaniline was converted into5-(trifluoromethyl)-2-methoxyphenyl isocyanate according to Method B1.5-(Trifluoromethyl)-2-methoxyphenyl isocyanate was reacted with3-(2-(N-methylcarbamoyl)-4-pyridyloxy)-4-methylaniline according toMethod C1a to afford the urea.

Entry 19: 4-Chloropyridine-2-carbonyl chloride was reacted withethylamine according to Method A2, Step 3b. The resulting4-chloro-N-ethyl-2-pyridinecarboxamide was reacted with 4-aminophenolaccording to Method A2, Step 4 to give4-(2-(N-ethylcarbamoyl)-4-pyridyloxy)aniline.5-(Trifluoromethyl)-2-methoxyaniline was converted into5-(trifluoromethyl)-2-methoxyphenyl isocyanate according to Method B1.5-(Trifluoromethyl)-2-methoxyphenyl isocyanate was reacted with4-(2-(N-ethylcarbamoyl)-4-pyridyloxy)aniline according to Method C1a toafford the urea.

Entry 20: According to Method A2, Step 4,4-amino-2-chlorophenol wasreacted with 4-chloro-N-methyl-2-pyridinecarboxamide, which had beensynthesized according to Method A2, Step 3b, to give4-(2-(N-methylcarbamoyl)-4-pyridyloxy)-3-chloroaniline.5-(Trifluoromethyl)-2-methoxyaniline was converted into5-(trifluoromethyl)-2-methoxyphenyl isocyanate according to Method B1.5-(Trifluoromethyl)-2-methoxyphenyl isocyanate was reacted with4-(2-(N-methylcarbamoyl)-4-pyridyloxy)-3-chloroaniline according toMethod C1a to afford the urea.

Entry 21: 4-(4-Methylthiophenoxy)-1-nitrobenzene was oxidized accordingto Method A19, Step 1 to give4-(4-methylsulfonylphenoxy)-1-nitrobenzene. The nitrobenzene was reducedaccording to Method A19, Step 2 to give4-(4-methylsulfonylphenoxy)-1-aniline. According to Method C1a,5-(trifluoromethyl)-2-methoxyphenyl isocyanate was reacted with4-(4-methylsulfonylphenoxy)-1-aniline to afford the urea.

Entry 22: 4-(3-carbamoylphenoxy)-1-nitrobenzene was reduced to4-(3-carbamoylphenoxy)aniline according to Method A15, Step 4. Accordingto Method C1a, 5-(trifluoromethyl)-2-methoxyphenyl isocyanate wasreacted with 4-(3-carbamoylphenoxy)aniline to afford the urea.

Entry 23: 5-(4-Aminophenoxy)isoindoline-1,3-dione was synthesizedaccording to Method A3. 5-(Trifluoromethyl)-2-methoxyaniline wasconverted into 5-(trifluoromethyl)-2-methoxyphenyl isocyanate accordingto Method B1. 5-(Trifluoromethyl)-2-methoxyphenyl isocyanate was reactedwith 5-(4-aminophenoxy)isoindoline-1,3-dione according to Method C1a toafford the urea.

Entry 24: 4-Chloropyridine-2-carbonyl chloride was reacted withdimethylamine according to Method A2, Step 3b. The resulting4-chloro-N,N-dimethyl-2-pyridinecarboxamide was reacted with4-aminophenol according to Method A2, Step 4 to give4-(2-(N,N-dimethylcarbamoyl)-4-pyridyloxy)aniline.5-(Trifluoromethyl)-2-methoxyaniline was converted into5-(trifluoromethyl)-2-methoxyphenyl isocyanate according to Method B1.5-(Trifluoromethyl)-2-methoxyphenyl isocyanate was reacted with 4-(2-(NN-dimethylcarbamoyl)-4-pyridyloxy)aniline according to Method C1a toafford the urea.

Entry 25: 4-(1-Oxoisoindolin-5-yloxy)aniline was synthesized accordingto Method A12. 5-(Trifluoromethyl)-2-methoxyaniline was treated withCDI, followed by 4-(1-oxoisoindolin-5-yloxy)aniline according to MethodC2d to afford the urea.

Entry 26: 4-Hydroxyacetophenone was reacted with 4-fluoronitrobenzeneaccording to Method A13, Step 1 to give 4-(4-acetylphenoxy)nitrobenzene.The nitrobenzene was reduced according to Method A13, Step 4 to afford4-(4-acetylphenoxy)aniline, which was converted to the4-(4-(1-(N-methoxy)iminoethyl)phenoxyaniline HCl salt according toMethod A16. 5-(Trifluoromethyl)-2-methoxyaniline was converted into5-(trifluoromethyl)-2-methoxyphenyl isocyanate according to Method B1.5-(Trifluoromethyl)-2-methoxyphenyl isocyanate was reacted with4-(4-(1-(N-methoxy)iminoethyl)phenoxyaniline HCl salt to Method C1a toafford the urea.

Entry 27: 4-Chloro-N-methylpyridinecarboxamide was synthesized asdescribed in Method A2, Step 3b. The chloropyridine was reacted with4-aminothiophenol according to Method A2, Step 4 to give4-(4-(2-(N-methylcarbamoyl)phenylthio)aniline.5-(Trifluoromethyl)-2-methoxyaniline was converted into5-(trifluoromethyl)-2-methoxyphenyl isocyanate according to Method B1.5-(Trifluoromethyl)-2-methoxyphenyl isocyanate was reacted with4-(4-(2-(N-methylcarbamoyl)phenylthio)aniline according to Method C1a toafford the urea.

Entry 28: 5-(4-Aminophenoxy)-2-methylisoindoline-1,3-dione wassynthesized according to Method A9. 5-(Trifluoromethyl)-2-methoxyanilinewas converted into 5-(trifluoromethyl)-2-methoxyphenyl isocyanateaccording to Method B1. 5-(Trifluoromethyl)-2-methoxyphenyl isocyanatewas reacted with 5-(4-aminophenoxy)-2-methylisoindoline-1,3-dioneaccording to Method C1a to afford the urea.

Entry 29: 4-Chloro-N-methylpyridinecarboxamide was synthesized asdescribed in Method A2. Step 3b. The chloropyridine was reacted with3-aminothiophenol according to Method A2, Step 4 to give3-(4-(2-(N-methylcarbamoyl)phenylthio)aniline.5-(Trifluoromethyl)-2-methoxyaniline was converted into5-(trifluoromethyl)-2-methoxyphenyl isocyanate according to Method B1.5-(Trifluoromethyl)-2-methoxyphenyl isocyanate was reacted with3-(4-(2-(N-methylcarbamoyl)phenylthio)aniline according to Method C1a toafford the urea.

Entry 30: 4-Chloropyridine-2-carbonyl chloride was reacted withisopropylamine according to Method A2, Step 3b. The resulting4-chloro-N-isopropyl-2-pyridinecarboxamide was reacted with4-aminophenol according to Method A2, Step 4 to give4-(2-(N-isopropylcarbamoyl)-4-pyridyloxy)aniline.5-(Trifluoromethyl)-2-methoxyaniline was converted into5-(trifluoromethyl)-2-methoxyphenyl isocyanate according to Method B1.5-(Trifluoromethyl)-2-methoxyphenyl isocyanate was reacted with4-(2-(N-isopropylcarbamoyl)-4-pyridyloxy)aniline according to Method C1ato afford the urea.

Entry 31: 4-(3-(5-Methoxycarbonyl)pyridyloxy)aniline was synthesizedaccording to Method A14. 5-(Trifluoromethyl)-2-methoxyaniline wasconverted into 5-(trifluoromethyl)-2-methoxyphenyl isocyanate accordingto Method B1. 5-(Trifluoromethyl)-2-methoxyphenyl isocyanate was reactedwith 4-(3-(5-methoxycarbonyl)pyridyloxy)aniline according to Method C1ato afford the urea.N-(5-(Trifluoromethyl)-2-methoxyphenyl)-N′-(4-(3-(5-methoxycarbonylpyridyl)oxy)phenyl)ureawas saponified according to Method D4, Step 1, and the correspondingacid was coupled with 4-(2-aminoethyl)morpholine to afford the amideaccording to Method D4, Step 2.

Entry 32: 4-(3-(5-Methoxycarbonyl)pyridyloxy)aniline was synthesizedaccording to Method A14. 5-(Trifluoromethyl)-2-methoxyaniline wasconverted into 5-(trifluoromethyl)-2-methoxyphenyl isocyanate accordingto Method B1. 5-(Trifluoromethyl)-2-methoxyphenyl isocyanate was reactedwith 4-(3-(5-methoxycarbonyl)pyridyloxy)aniline according to Method C1ato afford the urea.N-(5-(Trifluoromethyl)-2-methoxyphenyl)-N′-(4-(3-(5-methoxycarbonylpyridyl)oxy)phenyl)ureawas saponified according to Method D4, Step 1, and the correspondingacid was coupled with methylamine according to Method D4, Step 2 toafford the amide.

Entry 33: 4-(3-(5-Methoxycarbonyl)pyridyloxy)aniline was synthesizedaccording to Method A14. 5-(Trifluoromethyl)-2-methoxyaniline wasconverted into 5-(trifluoromethyl)-2-methoxyphenyl isocyanate accordingto Method B1. 5-(Trifluoromethyl)-2-methoxyphenyl isocyanate was reactedwith 4-(3-(5-methoxycarbonyl)pyridyloxy)aniline according to Method C1ato afford the urea.N-(5-(Trifluoromethyl)-2-methoxyphenyl)-N′-(4-(3-(5-methoxycarbonylpyridyl)oxy)phenyl)ureawas saponified according to Method D4, Step 1, and the correspondingacid was coupled with N,N-dimethylethylenediamine according to MethodD4, Step 2 to afford the amide.

Entry 34: 4-(3-Carboxyphenoxy)aniline was synthesized according toMethod A11. 5-(Trifluoromethyl)-2-methoxyaniline was converted into5-(trifluoromethyl)-2-methoxyphenyl isocyanate according to Method B1.4-(3-Carboxyphenoxy)aniline was reacted with5-(trifluoromethyl)-2-methoxyphenyl isocyanate according to Method C1fto affordN-(5-(trifluoromethyl)-2-methoxyphenyl)-N′-(3-carboxyphenyl)urea, whichwas coupled with 3-aminopyridine according to Method D1c.

Entry 35: 4-(3-Carboxyphenoxy)aniline was synthesized according toMethod A11. 5-(Trifluoromethyl)-2-methoxyaniline was converted into5-(trifluoromethyl)-2-methoxyphenyl isocyanate according to Method B1.4-(3-Carboxyphenoxy)aniline was reacted with5-(trifluoromethyl)-2-methoxyphenyl isocyanate according to Method C1fto affordN-(5-(trifluoromethyl)-2-methoxyphenyl)-N′-(3-carboxyphenyl)urea, whichwas coupled with N-(4-fluorophenyl)piperazine according to Method D1c.

Entry 36: 4-(3-Carboxyphenoxy)aniline was synthesized according toMethod A11. 5-(Trifluoromethyl)-2-methoxyaniline was converted into5-(trifluoromethyl)-2-methoxyphenyl isocyanate according to Method B1.4-(3-Carboxyphenoxy)aniline was reacted with5-(trifluoromethyl)-2-methoxyphenyl isocyanate according to Method C1fto affordN-(5-(trifluoromethyl)-2-methoxyphenyl)-N′-(3-carboxyphenyl)urea, whichwas coupled with 4-fluoroaniline according to Method D1c.

Entry 37: 4-(3-Carboxyphenoxy)aniline was synthesized according toMethod A11. 5-(Trifluoromethyl)-2-methoxyaniline was converted into5-(trifluoromethyl)-2-methoxyphenyl isocyanate according to Method B1.4-(3-Carboxyphenoxy)aniline was reacted with5-(trifluoromethyl)-2-methoxyphenyl isocyanate according to Method C1fto affordN-(5-(trifluoromethyl)-2-methoxyphenyl)-N′-(3-carboxyphenyl)urea, whichwas coupled with 4-(dimethylamino)aniline according to Method D1c.

Entry 38: 4-(3-Carboxyphenoxy)aniline was synthesized according toMethod A11. 5-(Trifluoromethyl)-2-methoxyaniline was converted into5-(trifluoromethyl)-2-methoxyphenyl isocyanate according to Method B1.4-(3-Carboxyphenoxy)aniline was reacted with5-(trifluoromethyl)-2-methoxyphenyl isocyanate according to Method C1fto affordN-(5-(trifluoromethyl)-2-methoxyphenyl)-N′-(3-carboxyphenyl)urea, whichwas coupled with 5-amino-2-methoxypyridine according to Method D1c.

Entry 39: 4-(3-Carboxyphenoxy)aniline was synthesized according toMethod A11. 5-(Trifluoromethyl)-2-methoxyaniline was converted into5-(trifluoromethyl)-2-methoxyphenyl isocyanate according to Method B1.4-(3-Carboxyphenoxy)aniline was reacted with5-(trifluoromethyl)-2-methoxyphenyl isocyanate according to Method C1fto affordN-(5-(trifluoromethyl)-2-methoxyphenyl)-N′-(3-carboxyphenyl)urea, whichwas coupled with 4-morpholinoaniline according to Method D1c.

Entry 40: 4-(3-Carboxyphenoxy)aniline was synthesized according toMethod A11. 5-(Trifluoromethyl)-2-methoxyaniline was converted into5-(trifluoromethyl)-2-methoxyphenyl isocyanate according to Method B1.4-(3-Carboxyphenoxy)aniline was reacted with5-(trifluoromethyl)-2-methoxyphenyl isocyanate according to Method C1fto affordN-(5-(trifluoromethyl)-2-methoxyphenyl)-N′-(3-carboxyphenyl)urea, whichwas coupled with N-(2-pyridyl)piperazine according to Method D1c.

Entry 41: 4-(3-(N-Methylcarbamoyl)phenoxy)aniline was synthesizedaccording to Method A13. According to MethodC3,4-chloro-3-(trifluoromethyl)aniline was converted to the isocyanate,then reacted with 4-(3-(N-Methylcarbamoyl)phenoxy)aniline to afford theurea.

Entry 42: 4-(2-N-Methylcarbamyl-4-pyridyloxy)aniline was synthesizedaccording to Method A2. 4-Chloro-3-(trifluoromethyl)phenyl isocyanatewas reacted with 4-(2-N-methylcarbamyl-4-pyridyloxy)aniline according toMethod C1a to afford the urea.

Entry 43: 4-Chloropyridine-2-carbonyl chloride HCl salt was reacted withammonia according to Method A2, Step 3b to form4-chloro-2-pyridinecarboxamide. 4-Chloro-2-pyridinecarboxamide wasreacted with 4-aminophenol according to Method A2, Step 4 to form4-(2-carbamoyl-4-pyridyloxy)aniline. According to Method C1a,4-chloro-3-(trifluoromethyl)phenyl isocyanate was reacted with4-(2-carbamoyl-4-pyridyloxy)aniline to afford the urea.

Entry 44: 4-Chloropyridine-2-carbonyl chloride HCl salt was reacted withammonia according to Method A2, Step 3b to form4-chloro-2-pyridinecarboxamide. 4-Chloro-2-pyridinecarboxamide wasreacted with 3-aminophenol according to Method A2, Step 4 to form3-(2-carbamoyl-4-pyridyloxy)aniline. According to Method C1a,4-chloro-3-(trifluoromethyl)phenyl isocyanate was reacted with3-(2-carbamoyl-4-pyridyloxy)aniline to afford the urea.

Entry 45: 4-Chloro-N-methyl-2-pyridinecarboxamide, which was synthesizedaccording to Method A2, Step 3a, was reacted with 3-aminophenolaccording to Method A2, Step 4 to form3-(-2-(N-methylcarbamoyl)-4-pyridyloxy)aniline. According to Method C1a,4-chloro-3-(trifluoromethyl)phenyl isocyanate was reacted with3-(2-(N-methylcarbamoyl)-4-pyridyloxy)aniline to afford the urea.

Entry 46: 5-(4-Aminophenoxy)isoindoline-1,3-dione was synthesizedaccording to Method A3. According to Method C1a,4-chloro-3-(trifluoromethyl)phenyl isocyanate was reacted with5-(4-aminophenoxy)isoindoline-1,3-dione to afford the urea.

Entry 47: 4-(2-(N-Methylcarbamoyl)-4-pyridyloxy)-2-methylaniline wassynthesized according to Method A5. According to Method C1c,4-chloro-3-(trifluoromethyl)phenyl isocyanate was reacted with5-(4-aminophenoxy)isoindoline-1,3-dione to afford the urea.

Entry 48: 4-(3-N-Methylsulfamoyl)phenyloxy)aniline was synthesizedaccording to Method A15. According to Method C1a,4-chloro-3-(trifluoromethyl)phenyl isocyanate was reacted with4-(3-N-methylsulfamoyl)phenyloxy)aniline to afford the urea.

Entry 49: 4-(2-(N-Methylcarbamoyl)-4-pyridyloxy)-2-chloroaniline wassynthesized according to Method A6. According to Method C1a,4-chloro-3-(trifluoromethyl)phenyl isocyanate was reacted with4-(2-(N-methylcarbamoyl)-4-pyridyloxy)-2-chloroaniline to afford theurea.

Entry 50: According to Method A2, Step 4,5-amino-2-methylphenol wasreacted with 4-chloro-N-methyl-2-pyridinecarboxamide, which had beensynthesized according to Method A2, Step 3b, to give3-(2-(N-methylcarbamoyl)-4-pyridyloxy)-4-methylaniline. According toMethod C1a, 4-chloro-3-(trifluoromethyl)phenyl isocyanate was reactedwith 3-(2-(N-methylcarbamoyl)-4-pyridyloxy)-4-methylaniline to affordthe urea.

Entry 51: 4-Chloropyridine-2-carbonyl chloride was reacted withethylamine according to Method A2, Step 3b. The resulting4-chloro-N-ethyl-2-pyridinecarboxamide was reacted with 4-aminophenolaccording to Method A2, Step 4 to give4-(2-(N-ethylcarbamoyl)-4-pyridyloxy)aniline. According to Method C1a,4-chloro-3-(trifluoromethyl)phenyl isocyanate was reacted with4-(2-(N-ethylcarbamoyl)-4-pyridyloxy)aniline to afford the urea.

Entry 52: According to Method A2, Step 4,4-amino-2-chlorophenol wasreacted with 4-chloro-N-methyl-2-pyridinecarboxamide, which had beensynthesized according to Method A2, Step 3b, to give4-(2-(N-methylcarbamoyl)-4-pyridyloxy)-3-chloroaniline. According toMethod C1a, 4-chloro-3-(trifluoromethyl)phenyl isocyanate was reactedwith 4-(2-(N-methylcarbamoyl)-4-pyridyloxy)-3-chloroaniline to affordthe urea.

Entry 53: 4-(4-Methylthiophenoxy)-1-nitrobenzene was oxidized accordingto Method A19, Step 1 to give4-(4-methylsulfonylphenoxy)-1-nitrobenzene. The nitrobenzene was reducedaccording to Method A19, Step 2 to give4-(4-methylsulfonylphenoxy)-1-aniline. According to Method C1a,4-chloro-3-(trifluoromethyl)phenyl isocyanate was reacted with4-(4-methylsulfonylphenoxy)-1-aniline to afford the urea.

Entry 54: 4-Bromobenzenesulfonyl chloride was reacted with methylamineaccording to Method A15, Step 1 to affordN-methyl-4-bromobenzenesulfonamide. N-Methyl-4-bromobenzenesulfonamidewas coupled with phenol according to Method A15, Step 2 to afford4-(4-(N-methylsulfamoyl)phenoxy)benzene.4-(4-(N-Methylsulfamoyl)phenoxy)benzene was converted into4-(4-(N-methylsulfamoyl)phenoxy)-1-nitrobenzene according to Method A15,Step 3. 4-(4-(N-Methylsulfamoyl)phenoxy)-1-nitrobenzene was reduced to4-(4-N-methylsulfamoyl)phenyloxy)aniline according to Method A15, Step4. According to Method C1a, 4-chloro-3-(trifluoromethyl)phenylisocyanate was reacted with 4-(3-N-methylsulfamoyl)phenyloxy)aniline toafford the urea.

Entry 55: 5-Hydroxy-2-methylpyridine was coupled with1-fluoro-4-nitrobenzene according to Method A18, Step 1 to give4-(5-(2-Methyl)pyridyloxy)-1-nitrobenzene. The methylpyridine wasoxidized according to the carboxylic acid, then esterified according toMethod A18, Step 2 to give4-(5-(2-methoxycarbonyl)pyridyloxy)-1-nitrobenzene. The nitrobenzene wasreduced according the Method A18, Step 3 to give4-(5-(2-methoxycarbonyl)pyridyloxy)aniline. The aniline was reacted with4-chloro-3-(trifluoromethyl)phenyl isocyanate according to Method C1a toafford the urea.

Entry 56: 5-Hydroxy-2-methylpyridine was coupled with1-fluoro-4-nitrobenzene according to Method A18, Step 1 to give4-(5-(2-Methyl)pyridyloxy)-1-nitrobenzene. The methylpyridine wasoxidized according to the carboxylic acid, then esterified according toMethod A18, Step 2 to give4-(5-(2-methoxycarbonyl)pyridyloxy)-1-nitrobenzene. The nitrobenzene wasreduced according the Method A18, Step 3 to give4-(5-(2-methoxycarbonyl)pyridyloxy)aniline. The aniline was reacted with4-chloro-3-(trifluoromethyl)phenyl isocyanate according to Method C1a togiveN-(4-chloro-3-(trifluoromethyl)phenyl)-N′-(4-(2-(methoxycarbonyl)-5-pyridyloxy)phenyl)urea.The methyl ester was reacted with methylamine according to Method D2 toaffordN-(4-chloro-3-(trifluoromethyl)phenyl)-N′-(4-(2-(N-methylcarbamoyl)-5-pyridyloxy)phenyl)urea.

Entry 57: N-(4-Chloro-3-(trifluoromethyl)phenyl-N′-(4-aminophenyl)ureawas prepared according to Method C1d.N-(4-Chloro-3-(trifluoromethyl)phenyl-N′-(4-aminophenyl)urea was coupledwith mono-methyl isophthalate according to Method D1a to afford theurea.

Entry 58: N-(4-Chloro-3-(trifluoromethyl)phenyl-N′-(4-aminophenyl)ureawas prepared according to Method C1d.N-(4-Chloro-3-(trifluoromethyl)phenyl-N′-(4-aminophenyl)urea was coupledwith mono-methyl isophthalate according to Method D1a to affordN-(4-chloro-3-(trifluoromethyl)phenyl-N′-(4-(3-methoxycarbonylphenyl)carboxyaminophenyl)urea.According to Method D2,N-(4-chloro-3-(trifluoromethyl)phenyl-N′-(4-(3-methoxycarbonylphenyl)carboxyaminophenyl)ureawas reacted with methylamine to afford the corresponding methyl amide.

Entry 59: 4-Chloropyridine-2-carbonyl chloride was reacted withdimethylamine according to Method A2, Step 3b. The resulting4-chloro-N,N-dimethyl-2-pyridinecarboxamide was reacted with4-aminophenol according to Method A2, Step 4 to give4-(2-(N,N-dimethylcarbamoyl)-4-pyridyloxy)aniline. According to MethodC1a, 4-chloro-3-(trifluoromethyl)phenyl isocyanate was reacted with4-(2-(N,N-dimethylcarbamoyl)-4-pyridyloxy)aniline to afford the urea.

Entry 60: 4-Hydroxyacetophenone was reacted with 4-fluoronitrobenzeneaccording to Method A13, Step 1 to give 4-(4-acetylphenoxy)nitrobenzene.The nitrobenzene was reduced according to Method 13, Step 4 to afford4-(4-acetylphenoxy)aniline, which was converted to the4-(4-(1-(N-methoxy)iminoethyl)phenoxyaniline HCl salt according toMethod A16. According to Method C1a, 4-chloro-3-(trifluoromethyl)phenylisocyanate was reacted with 4-(4-acetylphenoxy)aniline to afford theurea.

Entry 61: 4-(3-Carboxyphenoxy)-1-nitrobenzene was synthesized accordingto Method A13, Step 2. 4-(3-Carboxyphenoxy)-1-nitrobenzene was coupledwith 4-(2-aminoethyl)morpholine according to Method A13, Step 3 to give4-(3-(N-(2-morpholinylethyl)carbamoyl)phenoxy)-1-nitrobenzene. Accordingto Method A13 Step4,4-(3-(N-(2-morpholinylethyl)carbamoyl)phenoxy)-1-nitrobenzene wasreduced to 4-(3-(N-(2-morpholinylethyl)carbamoyl)phenoxy)aniline.According to Method C1a, 4-chloro-3-(trifluoromethyl)phenyl isocyanatewas reacted with 4-(3-(N-(2-morpholinylethyl)carbamoyl)phenoxy)anilineto afford the urea.

Entry 62: 4-(3-Carboxyphenoxy)-1-nitrobenzene was synthesized accordingto Method A13, Step 2. 4-(3-Carboxyphenoxy)-1-nitrobenzene was coupledwith 1-(2-aminoethyl)piperidine according to Method A13, Step 3 to give4-(3-(N-(2-piperidylethyl)carbamoyl)phenoxy)-1-nitrobenzene. Accordingto Method A13 Step4,4-(3-(N-(2-piperidylethyl)carbamoyl)phenoxy)-1-nitrobenzene wasreduced to 4-(3-(N-(2-piperidylethyl)carbamoyl)phenoxy)aniline.According to Method C1a, 4-chloro-3-(trifluoromethyl)phenyl isocyanatewas reacted with 4-(3-(N-(2-piperidylethyl)carbamoyl)phenoxy)aniline toafford the urea.

Entry 63: 4-(3-Carboxyphenoxy)-1-nitrobenzene was synthesized accordingto Method A13, Step 2. 4-(3-Carboxyphenoxy)-1-nitrobenzene was coupledwith tetrahydrofurfurylamine according to Method A13, Step 3 to give4-(3-(N-(tetrahydrofurylmethyl)carbamoyl)phenoxy)-1-nitrobenzene.According to Method A13 Step4,4-(3-(N-(tetrahydrofurylmethyl)carbamoyl)phenoxy)-1-nitrobenzene wasreduced to 4-(3-(N-(tetrahydrofurylmethyl)carbamoyl)phenoxy)aniline.According to Method C1a, 4-chloro-3-(trifluoromethyl)phenyl isocyanatewas reacted with4-(3-(N-(tetrahydrofurylmethyl)carbamoyl)phenoxy)aniline to afford theurea.

Entry 64: 4-(3-Carboxyphenoxy)-1-nitrobenzene was synthesized accordingto Method A13, Step 2. 4-(3-Carboxyphenoxy)-1-nitrobenzene was coupledwith 2-aminomethyl-1-ethylpyrrolidine according to Method A13, Step 3 togive4-(3-(N-((1-methylpyrrolidinyl)methyl)carbamoyl)phenoxy)-1-nitrobenzene.According to Method A13 Step4,4-(3-(N-((1-methylpyrrolidinyl)methyl)carbamoyl)phenoxy)-1-nitrobenzenewas reduced to4-(3-(N-((1-methylpyrrolidinyl)methyl)carbamoyl)phenoxy)aniline.According to Method C1a, 4-chloro-3-(trifluoromethyl)phenyl isocyanatewas reacted with4-(3-(N-((1-methylpyrrolidinyl)methyl)carbamoyl)phenoxy)aniline toafford the urea.

Entry 65: 4-Chloro-N-methylpyridinecarboxamide was synthesized asdescribed in Method A2, Step 3b. The chloropyridine was reacted with4-aminothiophenol according to Method A2. Step 4 to give4-(4-(2-(N-methylcarbamoyl)phenylthio)aniline. According to Method C₁a.4-chloro-3-(trifluoromethyl)phenyl isocyanate was reacted with4-(4-(2-(N-methylcarbamoyl)phenylthio)aniline to afford the urea.

Entry 66: 4-Chloropyridine-2-carbonyl chloride was reacted withisopropylamine according to Method A2, Step 3b. The resulting4-chloro-N-isopropyl-2-pyridinecarboxamide was reacted with4-aminophenol according to Method A2, Step 4 to give4-(2-(N-isopropylcarbamoyl)-4-pyridyloxy)aniline. According to MethodC1a, 4-chloro-3-(trifluoromethyl)phenyl isocyanate was reacted with4-(2-(N-isopropylcarbamoyl)-4-pyridyloxy)aniline to afford the urea.

Entry 67:N-(4-Chloro-3-(trifluoromethyl)phenyl-N′-(4-ethoxycarbonylphenyl)ureawas synthesized according to Method C1e.N-(4-Chloro-3-(trifluoromethyl)phenyl-N′-(4-ethoxycarbonylphenyl)ureawas saponified according to Method D3 to giveN-(4-chloro-3-(trifluoromethyl)phenyl-N′-(4-carboxyphenyl)urea.N-(4-Chloro-3-(trifluoromethyl)phenyl-N′-(4-carboxyphenyl)urea wascoupled with 3-methylcarbamoylaniline according to Method D1b to giveN-(4-chloro-3-(trifluoromethyl)phenyl-N′-(4-(3-methylcarbamoylphenyl)carbamoylphenyl)urea.

Entry 68: 5-(4-Aminophenoxy)-2-methylisoindoline-1,3-dione wassynthesized according to Method A9. According to Method C1a,4-chloro-3-(trifluoromethyl)phenyl isocyanate was reacted with5-(4-aminophenoxy)-2-methylisoindoline-1,3-dione to afford the urea.

Entry 69: 4-Chloro-N-methylpyridinecarboxamide was synthesized asdescribed in Method A2, Step 3b. The chloropyridine was reacted with3-aminothiophenol according to Method A2, Step 4 to give3-(4-(2-(N-methylcarbamoyl)phenylthio)aniline. According to Method C₁a,4-chloro-3-(trifluoromethyl)phenyl isocyanate was reacted with3-(4-(2-(N-methylcarbamoyl)phenylthio)aniline to afford the urea.

Entry 70: 4-(2-(N-(2-Morpholin-4-ylethyl)carbamoyl)pyridyloxy)anilinewas synthesized according to Method A10. According to Method C1a,4-chloro-3-(trifluoromethyl)phenyl isocyanate was reacted with4-(2-(N-(2-morpholin-4-ylethyl)carbamoyl)pyridyloxy)aniline to affordthe urea.

Entry 71: 4-(3-(5-Methoxycarbonyl)pyridyloxy)aniline was synthesizedaccording to Method A14. 4-Chloro-3-(trifluoromethyl)-2-methoxyphenylisocyanate was reacted with 4-(3-(5-methoxycarbonyl)pyridyloxy)anilineaccording to Method C1a to afford the urea.N-(4-Chloro-3-(trifluoromethyl)phenyl)-N′-(4-(3-(5-methoxycarbonylpyridyl)oxy)phenyl)ureawas saponified according to Method D4, Step 1, and the correspondingacid was coupled with 4-(2-aminoethyl)morpholine to afford the amide.

Entry 72: 4-(3-(5-Methoxycarbonyl)pyridyloxy)aniline was synthesizedaccording to Method A14. 4-Chloro-3-(trifluoromethyl)phenyl isocyanatewas reacted with 4-(3-(5-methoxycarbonyl)pyridyloxy)aniline according toMethod C1a to afford the urea.N-(5-(Trifluoromethyl)-2-methoxyphenyl)-N′-(4-(3-(5-methoxycarbonylpyridyl)oxy)phenyl)ureawas saponified according to Method D4, Step 1, and the correspondingacid was coupled with methylamine according to Method D4, Step 2 toafford the amide.

Entry 73: 4-(3-(5-Methoxycarbonyl)pyridyloxy)aniline was synthesizedaccording to Method A14. 4-Chloro-3-(trifluoromethyl)phenyl isocyanatewas reacted with 4-(3-(5-methoxycarbonyl)pyridyloxy)aniline according toMethod C1a to afford the urea.N-(5-(Trifluoromethyl)-2-methoxyphenyl)-N′-(4-(3-(5-methoxycarbonylpyridyl)oxy)phenyl)ureawas saponified according to Method D4, Step 1, and the correspondingacid was coupled with N,N-dimethylethylenediamine according to MethodD4, Step 2 to afford the amide.

Entry 74: 4-Chloropyridine-2-carbonyl chloride HCl salt was reacted with2-hydroxyethylamine according to Method A2, Step 3b to form4-chloro-N-(2-triisopropylsilyloxy)ethylpyridine-2-carboxamide.4-Chloro-N-(2-triisopropylsilyloxy)ethylpyridine-2-carboxamide wasreacted with triisopropylsilyl chloride, followed by 4-aminophenolaccording to Method A17 to form4-(4-(2-(N-(2-triisopropylsilyloxy)ethylcarbamoyl)pyridyloxyaniline.According to Method C1a 4-chloro-3-(trifluoromethyl)phenyl isocyanatewas reacted with4-(4-(2-(N-(-2-triisopropylsilyloxy)ethylcarbamoyl)pyridyloxyaniline toaffordN-(4-chloro-3-((trifluoromethyl)phenyl)-N′-(4-(4-(2-(N-(2-triisopropylsilyloxy)ethylcarbamoyl)pyridyloxyphenyl)urea.

Entry 75: 4-(3-Carboxyphenoxy)aniline was synthesized according toMethod A11. 4-Chloro-3-(trifluoromethyl)phenyl isocyanate was reactedwith 4-(3-(5-methoxycarbonyl)pyridyloxy)aniline according to Method C1fto afford the urea, which was coupled with 3-aminopyridine according toMethod D1c.

Entry 76: 4-(3-Carboxyphenoxy)aniline was synthesized according toMethod A11. 4-Chloro-3-(trifluoromethyl)phenyl isocyanate was reactedwith 4-(3-carboxyphenoxy)aniline according to Method C1f to afford theurea, which was coupled with N-(4-acetylphenyl)piperazine according toMethod D1c.

Entry 77: 4-(3-Carboxyphenoxy)aniline was synthesized according toMethod A11. 4-Chloro-3-(trifluoromethyl)phenyl isocyanate was reactedwith 4-(3-carboxyphenoxy)aniline according to Method C1f to afford theurea, which was coupled with 4-fluoroaniline according to Method D1c.

Entry 78: 4-(3-Carboxyphenoxy)aniline was synthesized according toMethod A11. 4-Chloro-3-(trifluoromethyl)phenyl isocyanate was reactedwith 4-(3-carboxyphenoxy)aniline according to Method C1f to afford theurea, which was coupled with 4-(dimethylamino)aniline according toMethod D1c.

Entry 79: 4-(3-Carboxyphenoxy)aniline was synthesized according toMethod A11. 4-Chloro-3-(trifluoromethyl)phenyl isocyanate was reactedwith 4-(3-carboxyphenoxy)aniline according to Method C1f to afford theurea, which was coupled with N-phenylethylenediamine according to MethodD1c.

Entry 80: 4-(3-Carboxyphenoxy)aniline was synthesized according toMethod A11. 4-Chloro-3-(trifluoromethyl)phenyl isocyanate was reactedwith 4-(3-carboxyphenoxy)aniline according to Method C1f to afford theurea, which was coupled with 2-methoxyethylamine according to MethodD1c.

Entry 81: 4-(3-Carboxyphenoxy)aniline was synthesized according toMethod A11. 4-Chloro-3-(trifluoromethyl)phenyl isocyanate was reactedwith 4-(3-carboxyphenoxy)aniline according to Method C1f to afford theurea, which was coupled with 5-amino-2-methoxypyridine according toMethod D1c.

Entry 82: 4-(3-Carboxyphenoxy)aniline was synthesized according toMethod A11. 4-Chloro-3-(trifluoromethyl)phenyl isocyanate was reactedwith 4-(3-carboxyphenoxy)aniline according to Method C1f to afford theurea, which was coupled with 4-morpholinoaniline according to MethodD1c.

Entry 83: 4-(3-Carboxyphenoxy)aniline was synthesized according toMethod A11. 4-Chloro-3-(trifluoromethyl)phenyl isocyanate was reactedwith 4-(3-carboxyphenoxy)aniline according to Method C1f to afford theurea, which was coupled with N-(2-pyridyl)piperazine according to MethodD1c.

Entry 84: 4-Chloropyridine-2-carbonyl chloride HCl salt was reacted with2-hydroxyethylamine according to Method A2, Step 3b to form4-chloro-N-(2-triisopropylsilyloxy)ethylpyridine-2-carboxamide.4-Chloro-N-(2-triisopropylsilyloxy)ethylpyridine-2-carboxamide wasreacted with triisopropylsilyl chloride, followed by 4-aminophenolaccording to Method A17 to form4-(4-(2-(N-(2-triisopropylsilyloxy)ethylcarbamoyl)pyridyloxyaniline.According to Method C1a, 4-chloro-3-(trifluoromethyl)phenyl isocyanatewas reacted with4-(4-(2-(N-(2-triisopropylsilyloxy)ethylcarbamoyl)pyridyloxyaniline togiveN-(4-chloro-3-((trifluoromethyl)phenyl)-N′-(4-(4-(2-(N-(2-triisopropylsilyloxy)ethylcarbamoyl)pyridyloxyphenyl)urea.The urea was deprotected according to Method D5 to affordN-(4-chloro-3-((trifluoromethyl)phenyl)-N′-(4-(4-(2-(N-(2-hydroxy)ethylcarbamoyl)pyridyloxyphenyl)urea.

Entry 85: 4-(2-(N-Methylcarbamoyl)-4-pyridyloxy)aniline was synthesizedaccording to Method A2. 4-Bromo-3-(trifluoromethyl)aniline was convertedto 4-bromo-3-(trifluoromethyl)phenyl isocyanate according to Method B1.According to Method C1a, 4-bromo-3-(trifluoromethyl)phenyl isocyanatewas reacted with 4-(2-(N-methylcarbamoyl)-4-pyridyloxy)aniline to affordthe urea.

Entry 86: 4-(2-(N-Methylcarbamoyl)-4-pyridyloxy)-2-chloroaniline wassynthesized according to Method A6. 4-Bromo-3-(trifluoromethyl)anilinewas converted into 4-bromo-3-(trifluoromethyl)phenyl isocyanateaccording to Method B1. According to Method C1a,4-bromo-3-(trifluoromethyl)phenyl isocyanate was reacted with4-(2-(N-methylcarbamoyl)-4-pyridyloxy)-2-chloroaniline to afford theurea.

Entry 87: According to Method A2, Step 4,4-amino-2-chlorophenol wasreacted with 4-chloro-N-methyl-2-pyridinecarboxamide, which had beensynthesized according to Method A2, Step 3b, to give4-(2-(N-methylcarbamoyl)-4-pyridyloxy)-3-chloroaniline.4-Bromo-3-(trifluoromethyl)aniline was converted into4-bromo-3-(trifluoromethyl)phenyl isocyanate according to Method B1.According to Method C1a, 4-bromo-3-(trifluoromethyl)phenyl isocyanatewas reacted with 4-(2-(N-methylcarbamoyl)-4-pyridyloxy)-3-chloroanilineto afford the urea.

Entry 88: 4-Chloropyridine-2-carbonyl chloride was reacted withethylamine according to Method A2, Step 3b. The resulting4-chloro-N-ethyl-2-pyridinecarboxamide was reacted with 4-aminophenolaccording to Method A2, Step 4 to give4-(2-(N-ethylcarbamoyl)-4-pyridyloxy)aniline.4-Bromo-3-(trifluoromethyl)aniline was converted into4-bromo-3-(trifluoromethyl)phenyl isocyanate according to Method B1.According to Method C1a, 4-bromo-3-(trifluoromethyl)phenyl isocyanatewas reacted with 4-(2-(N-ethylcarbamoyl)-4-pyridyloxy)aniline to affordthe urea.

Entry 89: 4-Chloro-N-methyl-2-pyridinecarboxamide, which was synthesizedaccording to Method A2, Step 3a, was reacted with 3-aminophenolaccording to Method A2, Step 4 to form3-(-2-(N-methylcarbamoyl)-4-pyridyloxy)aniline.4-Bromo-3-(trifluoromethyl)aniline was converted into4-bromo-3-(trifluoromethyl)phenyl isocyanate according to Method B1.According to Method C1a, 4-bromo-3-(trifluoromethyl)phenyl isocyanatewas reacted with 3-(-2-(N-methylcarbamoyl)-4-pyridyloxy)aniline toafford the urea.

Entry 90: According to Method A2, Step 4,5-amino-2-methylphenol wasreacted with 4-chloro-N-methyl-2-pyridinecarboxamide, which had beensynthesized according to Method A2. Step 3b, to give3-(2-(N-methylcarbamoyl)-4-pyridyloxy)-4-methylaniline.4-Bromo-3-(trifluoromethyl)aniline was converted into4-bromo-3-(trifluoromethyl)phenyl isocyanate according to Method B1.According to Method C1a, 4-bromo-3-(trifluoromethyl)phenyl isocyanatewas reacted with 3-(2-(N-methylcarbamoyl)-4-pyridyloxy)-4-methylanilineto afford the urea.

Entry 91: 4-Chloropyridine-2-carbonyl chloride was reacted withdimethylamine according to Method A2, Step 3b. The resulting4-chloro-N,N-dimethyl-2-pyridinecarboxamide was reacted with4-aminophenol according to Method A2, Step 4 to give4-(2-(N,N-dimethylcarbamoyl)-4-pyridyloxy)aniline.4-Bromo-3-(trifluoromethyl)aniline was converted into4-bromo-3-(trifluoromethyl)phenyl isocyanate according to Method B1.According to Method C1a, 4-bromo-3-(trifluoromethyl)phenyl isocyanatewas reacted with 4-(2-(N,N-dimethylcarbamoyl)-4-pyridyloxy)aniline toafford the urea.

Entry 92: 4-Chloro-N-methylpyridinecarboxamide was synthesized asdescribed in Method A2, Step 3b. The chloropyridine was reacted with4-aminothiophenol according to Method A2, Step 4 to give4-(4-(2-(N-methylcarbamoyl)phenylthio)aniline.4-Bromo-3-(trifluoromethyl)aniline was converted into4-bromo-3-(trifluoromethyl)phenyl isocyanate according to Method B1.According to Method C1a, 4-bromo-3-(trifluoromethyl)phenyl isocyanatewas reacted with 4-(4-(2-(N-methylcarbamoyl)phenylthio)aniline to affordthe urea.

Entry 93: 4-Chloro-N-methylpyridinecarboxamide was synthesized asdescribed in Method A2, Step 3b. The chloropyridine was reacted with3-aminothiophenol according to Method A2, Step 4 to give3-(4-(2-(N-methylcarbamoyl)phenylthio)aniline.4-Bromo-3-(trifluoromethyl)aniline was converted into4-bromo-3-(trifluoromethyl)phenyl isocyanate according to Method B1.According to Method C1a, 4-bromo-3-(trifluoromethyl)phenyl isocyanatewas reacted with 3-(4-(2-(N-methylcarbamoyl)phenylthio)aniline to affordthe urea.

Entry 94: 4-(2-(N-(2-Morpholin-4-ylethyl)carbamoyl)pyridyloxy)anilinewas synthesized according to Method A10.4-Bromo-3-(trifluoromethyl)aniline was converted into4-bromo-3-(trifluoromethyl)phenyl isocyanate according to Method B1.According to Method C1a, 4-bromo-3-(trifluoromethyl)phenyl isocyanatewas reacted with4-(2-(N-(2-Morpholin-4-ylethyl)carbamoyl)pyridyloxy)aniline to affordthe urea.

Entry 95: 4-(2-(N-Methylcarbamoyl)-4-pyridyloxy)aniline was synthesizedaccording to Method A2. 4-Chloro-2-methoxy-5-(trifluoromethyl)anilinewas synthesized according to Method A7.4-Chloro-2-methoxy-5-(trifluoromethyl)aniline was converted into4-chloro-2-methoxy-5-(trifluoromethyl)phenyl isocyanate according toMethod B1. According to Method C1a,4-chloro-2-methoxy-5-(trifluoromethyl)phenyl isocyanate was reacted with4-(2-(N-methylcarbamoyl)-4-pyridyloxy)aniline to afford the urea.

Entry 96: 4-(2-(N-Methylcarbamoyl)-4-pyridyloxy)-2-chloroaniline wassynthesized according to Method A6.4-Chloro-2-methoxy-5-(trifluoromethyl)aniline was synthesized accordingto Method A7. 4-Chloro-2-methoxy-5-(trifluoromethyl)aniline wasconverted into 4-chloro-2-methoxy-5-(trifluoromethyl)phenyl isocyanateaccording to Method B1. According to Method C1a,4-chloro-2-methoxy-5-(trifluoromethyl)phenyl isocyanate was reacted with4-(2-(N-methylcarbamoyl)-4-pyridyloxy)-2-chloroaniline afford the urea.

Entry 97: According to Method A2, Step 4,4-amino-2-chlorophenol wasreacted with 4-chloro-N-methyl-2-pyridinecarboxamide, which had beensynthesized according to Method A2, Step 3b, to give4-(2-(N-methylcarbamoyl)-4-pyridyloxy)-3-chloroaniline.4-Chloro-2-methoxy-5-(trifluoromethyl)aniline was synthesized accordingto Method A7. 4-Chloro-2-methoxy-5-(trifluoromethyl)aniline wasconverted into 4-chloro-2-methoxy-5-(trifluoromethyl)phenyl isocyanateaccording to Method B1. According to Method C1a,4-chloro-2-methoxy-5-(trifluoromethyl)phenyl isocyanate was reacted with4-(2-(N-methylcarbamoyl)-4-pyridyloxy)-3-chloroaniline to afford theurea.

Entry 98: 4-Chloro-N-methyl-2-pyridinecarboxamide, which was synthesizedaccording to Method A2, Step 3a, was reacted with 3-aminophenolaccording to Method A2, Step 4 to form3-(-2-(N-methylcarbamoyl)-4-pyridyloxy)aniline.4-Chloro-2-methoxy-5-(trifluoromethyl)aniline was synthesized accordingto Method A7. 4-Chloro-2-methoxy-5-(trifluoromethyl)aniline wasconverted into 4-chloro-2-methoxy-5-(trifluoromethyl)phenyl isocyanateaccording to Method B1. According to Method C1a,4-chloro-2-methoxy-5-(trifluoromethyl)phenyl isocyanate as was reactedwith 3-(-2-(N-methylcarbamoyl)-4-pyridyloxy)aniline to afford the urea.

Entry 99: 4-Chloropyridine-2-carbonyl chloride was reacted withethylamine according to Method A2, Step 3b. The resulting4-chloro-N-ethyl-2-pyridinecarboxamide was reacted with 4-aminophenolaccording to Method A2, Step 4 to give4-(2-(N-ethylcarbamoyl)-4-pyridyloxy)aniline.4-Chloro-2-methoxy-5-(trifluoromethyl)aniline was synthesized accordingto Method A7. 4-Chloro-2-methoxy-5-(trifluoromethyl)aniline wasconverted into 4-chloro-2-methoxy-5-(trifluoromethyl)phenyl isocyanateaccording to Method B1. According to Method C1a,4-chloro-2-methoxy-5-(trifluoromethyl)phenyl isocyanate was reacted with4-(2-(N-ethylcarbamoyl)-4-pyridyloxy)aniline to afford the urea.

Entry 100: 4-Chloropyridine-2-carbonyl chloride was reacted withdimethylamine according to Method A2, Step 3b. The resulting4-chloro-N,N-dimethyl-2-pyridinecarboxamide was reacted with4-aminophenol according to Method A2, Step 4 to give4-(2-(N,N-dimethylcarbamoyl)-4-pyridyloxy)aniline.4-Chloro-2-methoxy-5-(trifluoromethyl)aniline was synthesized accordingto Method A7. 4-Chloro-2-methoxy-5-(trifluoromethyl)aniline wasconverted into 4-chloro-2-methoxy-5-(trifluoromethyl)phenyl isocyanateaccording to Method B1. According to Method C1a,4-chloro-2-methoxy-5-(trifluoromethyl)phenyl isocyanate was reacted with4-(2-(N,N-dimethylcarbamoyl)-4-pyridyloxy)aniline to afford the urea.

Entry 101: 4-Chloro-N-methyl-2-pyridinecarboxamide, which wassynthesized according to Method A2, Step 3a, was reacted with3-aminophenol according to Method A2, Step 4 to form3-(-2-(N-methylcarbamoyl)-4-pyridyloxy)aniline.2-Amino-3-methoxynaphthalene was synthesized as described Method A1.According to Method C3,2-amino-3-methoxynaphthalene was reacted withbis(trichloromethyl) carbonate followed by3-(-2-(N-methylcarbamoyl)-4-pyridyloxy)aniline to form the urea.

Entry 102: 4-(2-(N-Methylcarbamoyl)-4-pyridyloxy)aniline was synthesizedaccording to Method A2. 5-tert-Butyl-2-(2,5-dimethylpyrrolyl)aniline wassynthesized according to Method A4.5-tert-Butyl-2-(2,5-dimethylpyrrolyl)aniline was reacted with CDIfollowed by 4-(2-(N-methylcarbamoyl)-4-pyridyloxy)aniline according toMethod C2d to afford the urea.

Entry 103: 4-Chloro-N-methyl-2-pyridinecarboxamide was synthesizedaccording to Method A2, Step 3b. 4-Chloro-N-methyl-2-pyridinecarboxamidewas reacted with 4-aminophenol according to Method A2, Step 4 using DMACin place of DMF to give 4-(2-(N-methylcarbamoyl)-4-pyridyloxy)aniline.According to Method C2b, reaction of 3-amino-2-methoxyquinoline with CDIfollowed by 4-(2-(N-methylcarbamoyl)-4-pyridyloxy)aniline affordedbis(4-(2-(N-methylcarbamoyl)-4-pyridlyoxy)phenyl)urea.

Listed in the Tables below are compounds which have been synthesizedaccording to the Detailed Experimental Procedures given above:

TABLES

The compounds listed in Tables 1-6 below were synthesized according tothe general methods shown above, and the more detailed exemplarprocedures are in the entry listings above and characterizations areindicated in the tables.

TABLE 1 3-tert-Butylphenyl Ureas

TLC Mass mp HPLC TLC Solvent Spec. Synth. Entry R (° C.) (min.) R_(ƒ)System [Source] Method 1

0.22 50%EtOAc/50% hexane 418(M + H) +(HPLCES-MS) A13 C3 2

0.58 50%EtOAc/50% hexane 403(M + H) +(HPLCES-MS) A13 C3 3

133-135 0.68 100%EtOAc 448(M + H) +(FAB) A8 C2d

TABLE 2 5-tert-Butyl-2-methoxyphenyl Ureas

TLC Mass mp HPLC TLC Solvent Spec. Synth. Entry R (° C.) (min.) R_(ƒ)System [Source] Method 4

5.93 448(M + H) +(HPLCES-MS) A13B1C1a 5

120-122 0.67 100%EtOAc 478(M + H) +(FAB) A8C2d 6

0.40 50%EtOAc/50%hexane 460(M + H) +(HPLCES-MS) A3C2d 7

0.79 50%EtOAc/50%hexane 446(M + H) +(HPLCES-MS) A12C2d

TABLE 3 5-(Trifluoromethyl)-2-methoxyphenyl Ureas

TLC Mass mp HPLC TLC Solvent Spec. Synth. Entry R (° C.) (min.) R_(ƒ)System [Source] Method  8

250(dec) 460(M + H) +(FAB) A13C2a  9

206-208 0.54 10%MeOH/90%CH2Cl2 446(M + H) +(HPLCES-MS) A3 step2,A8step4,B1,C1a 10

0.33 50%EtOAc/50%pet ether 445(M + H) +(HPLCES-MS) A13 C3 11

0.20 2%Et3N/98%EtOAc 461(M + H) +(HPLCES-MS) A2C4 12

0.27 1%Et3N/99%EtOAc 447(M + H) +(HPLCEs-MS) A2C4 13

0.62 100%EtOAc 461(M + H) +(FAB) A2 C2a 14

114-117 0.40 1%Et3N/99%EtOAc 447(M + H) +(FAB) A2C4 15

232-235 0.54 100%EtOAc 490(M + H) +(FAB) A8 C2d 16

210-213 0.29 5%MeOH/45%EtOAc/50%pet ether 475(M + H) +(HPLCES-MS) A5B1C1c 17

187-188 0.17 50%EtOAc/50%pet ether 495(M + H) +(HPLCES-MS) A6B1 C1a 18

0.48 100%EtOAc 475(M + H) +(HPLCES-MS) A2 step4,B1 C1a 19

194-196 0.31 5%MeOH/45%EtOAc/50%pet ether 475(M + H) +(HPLCES-MS) A2B1C1a 20

214-216 0.25 5%MeOH/45%EtOAc/50%pet ether 495(M + H) +(HPLCES-MS) A2 C1a21

208-210 0.30 50%EtOAc/50%hexane 481(M + H) +(HPLCES-MS) A19 C2a 22

188-190 0.30 70%EtOAc/50%hexane 447(M + H) +(HPLCES-MS) A15,step 4,C1a23

0.50 70%EtOAc/30%hexane 472(M + H) +(FAB) A3B1 C1a 24

203-205 0.13 100%EtOAc 479(M + H) +(HPLCES-MS) A2 B1C1a 25

0.09 75%EtOAc/25%hexane 458(M + H) +(HPLCES-MS) A12C2d 26

169-171 0.67 50%EtOAc/50%pet ether 474(M + H) +(HPLCES-MS) A13step1,A13step4, A16,B1C1a 27

218-219 0.40 50%EtOAc/50%pet ether 477(M + H) +(HPLCES-MS) A2 step3b,A2step4, B1,C1a 28

212-214 0.30 40%EtOAc/60%hexane A9B1 C1a 29

0.33 50%EtOAc/50%pet ether 474(M + H) +(HPLCES-MS) A2 step3b,A2 step4,B1,C1a 30

210-211 A2B1C1a 31

210-204 0.43 10%MeOH/CH2Cl2 A14B1C1aD4 32

247-249 0.57 10%MeOH/CH2Cl2 A14B1C1aD4 33

217-219 0.07 10%MeOH/CH2Cl2 A14B1C1aD4 34

0.11 70%EtOAc/30%hexane A11B1C1fD1c 35

0.38 70%EtOAc/30%hexane A11B1C1fD1c 36

0.77 70%EtOAc/30%hexane A11B1C1fD1c 37

0.58 70%EtOAc/30%hexane A11B1C1fD1c 38

0.58 70%EtOAc/30%hexane A11B1C1fD1c 39

0.17 70%EtOAc/30%hexane A11B1C1fD1c 40

0.21 70%EtOAc/30%hexane A11B1C1fD1c

TABLE 4 3-(Trifluoromethyl)-4-chlorophenyl Ureas

TLC Mass mp HPLC TLC Solvent Spec. Synth. Entry R (° C.) (min.) R_(ƒ)System [Source] Method 41

163-165 0.08 50%EtOAc/50%pet ether 464(M + H) +(HPLCES-MS) A13C3 42

215 0.06 50%EtOAc/50%pet ether 465(M + H) +(HPLCES-MS) A2C1a 43

0.10 50%EtOAc/50%pet ether 451(M + H) +(HPLCES-MS) A2C1a 44

0.25 30%EtOAc/70%pet ether 451(M + H) +(HPLCES-MS) A2C1a 45

0.31 30%EtOAc/70%pet ether 465(M + H) +(HPLCES-MS) A2C1a 46

176-179 0.23 40%EtOAc/60%hexane 476(M + H) +(FAB) A3C1a 47

0.29 5%MeOH/45%EtOAc/50%pet ether 478(M + H) +(HPLCES-MS) A5C1c 48

206-209 A15C1a 49

147-151 0.22 50%EtOAc/50%pet ether 499(M + H) +(HPLCES-MS) A6C1a 50

0.54 100%EtOAc 479(M + H) +(HPLCES-MS) A2C1a 51

187-189 0.33 5%MeOH/45%EtOAc/50%pet ether 479(M + H) +(HPLCES-MS) A2C1a52

219 0.18 5%MeOH/45%EtOAc/50%pet ether 499(M + H) +(HPLCES-MS) A2C1a 53

246-248 0.30 50%EtOAc/50%hexane 485(M + H) +(HPLCES-MS) A19,C1a 54

196-200 0.30 70%EtOAc/30%hexane) 502(M + H )+(HPLCES-MS) A15C1a 55

228-230 0.30 30%EtOAc/70%CH2Cl2 466(M + H) +(HPLCES-MS) 56

238-245 57

221-222 0.75 80%EtOAc/20%hexane 492(M + H) +(FAB) C1dD1a 58

247 0.35 100%EtOAc C1dD1aD2 59

198-200 0.09 100%EtOAc 479(M + H) +(HPLCES-MS) A2C1a 60

158-160 0.64 50%EtOAc/50%pet ether 61

195-197 0.39 10%MeOH/CH2Cl2 A13C1a 62

170-172 0.52 10%MeOH/CH2Cl2 A13C1a 63

168-171 0.39 10%MeOH/CH2Cl2 A13C1a 64

176-177 0.35 10%MeOH/CH2Cl2 A13C1a 65

130-133 487(M + H) +(HPLCES-MS) A2B1C1a 66

155 A2C1a 67

225-229 0.23 100%EtOAc C1eD3D1b 68

234-236 0.29 40%EtOAc/60%hexane A9C1a 69

0.48 50%EtOAc/50%pet ether 481(M + H) +(HPLCES-MS) 70

0.46 5%MeOH/95%CH2Cl2 564(M + H) +(HPLCES-MS) A10C1a 71

199-201 0.50 10%MeOH/CH2Cl2 A14C1aD4 72

235-237 0.55 10%MeOH/CH2Cl2 A14C1aD4 73

200-201 0.21 50%MeOH/CH2Cl2 A14C1aD4 74

145-148 75

0.12 70%EtOAc/30%hexane 527(M + H) +(HPLCES-MS) A11C1fD1c 76

0.18 70%EtOAc/30%hexane A11C1fD1c 77

0.74 70%EtOAc/30%hexane A11D1fD1c 78

0.58 70%EtOAc/30%hexane A11C1fD1c 79

0.47 70%EtOAc/30%hexane 569(M + H) +(HPLCES-MS) A11C1fD1c 80

0.18 70%EtOAc/30%hexane 508(M + H) +(HPLCES-MS) A11C1fD1c 81

0.58 70%EtOAc/30%hexane 557(M + H) +(HPLCES-MS) A11C1fD1c 82

0.37 70%EtOAc/30%hexane 611(M + H) +(HPLCES-MS) A11C1fD1c 83

0.19 70%EtOAc/30%hexane A11C1fD1c 84

179-183 A2A17C1aD5

TABLE 5 3-(Trifluoromethyl)-4-bromophenyl Ureas

TLC Mass mp HPLC TLC Solvent Spec. Synth. Entry R (° C.) (min.) R_(ƒ)System [Source] Method 85

186-187 0.13 50%EtOAc/50%pet ether 509(M + H )+(HPLCES-MS) A2B1C1a 86

150-152 0.31 50%EtOAc/50%pet ether 545(M + H) +(HPLCES-MS) A6B1C1a 87

217-219 0.16 50%EtOAc/50%pet ether 545(M + H) +(HPLCES-MS) A2B1C1a 88

183-184 0.31 50%EtOAc/50%pet ether 525(M + H) +(HPLCES-MS) A2B1C1a 89

0.21 50%EtOAc/50%pet ether 511(M + H) +(HPLCES-MS) A2B1C1a 90

0.28 50%EtOAc/50%pet ether 525(M + H) +(HPLCES-MS) A2B1C1a 91

214-216 0.28 50%EtOAc/50%pet ether 522(M + H) +(HPLCES-MS) A2B1C1a 92

0.47 50%EtOAc/50%pet ether 527(M + H) +(HPLCES-MS) A2 step3b,A2 step4,B1,C1a 93

0.46 50%EtOAc/50%pet ether 527(M + H) +(HPLCES-MS) A2 step3b,A2 step4,B1,C1a 94

145-150 0.41 5%MeOH/95%CH2Cl2 A10B1C1a

TABLE 6 5-(Trifluoromethyl)-4-chloro-2-methoxyphenyl Ureas

TLC Mass mp HPLC TLC Solvent Spec. Synth. Entry R (° C.) (min.) R_(ƒ)System [Source] Method 95

140-144 0.29 5%MeOH/45%EtOAc/50%pet ether 495(M + H) +(HPLCES-MS)A2A7B1C1a 96

244-245 0.39 5%MeOH/45%EtOAc/50%pet ether 529(M + H) +(HPLCES-MS)A6A7B1C1a 97

220-221 0.25 5%MeOH/45%EtOAc/50%pet ether 529(M + H) +(HPLCES-MS)A2A7B1C1a 98

0.27 5%MeOH/45%EtOAc/50%pet ether 495(M + H) +(HPLCES-MS) A2A7B1C1a 99

180-181 0.52 5%MeOH/45%EtOAc/50%pet ether 509(M + H) +(HPLCES-MS)A2A7B1C1a 100 

162-165 A2A7B1C1a

TABLE 7 Additional Ureas TLC Mass mp HPLC TLC Solvent Spec. Synth. EntryR (° C.) (min.) R_(ƒ) System [Source] Method 101

162-165 A1A2C3 102

0.10 50%EtOAc/50%hexane 442(M + H) +(HPLCES-MS) A2A4C2d 103

125-130 0.24 40%EtOAc/60%hexane 512(M + H) +(FAB) A2C2b

Biological Examples In Vitro raf Kinase Assay

In an in vitro kinase assay, raf was incubated with MEK in 20 mMTris-HCl, pH 8.2 containing 2 mM 2-mercaptoethanol and 100 mM NaCl. Thisprotein solution (20 μL) was mixed with water (5 μL) or with compoundsdiluted with distilled water from 10 mM stock solutions of compoundsdissolved in DMSO. The kinase reaction was initiated by adding 25 μL[λ-³³P]ATP (1000-3000 dpm/pmol) in 80 mM Tris-HCl, pH 7.5, 120 mM NaCl,1.6 mM DTT, 16 mM MgCl₂. The reaction mixtures were incubated at 32° C.,usually for 22 min. Incorporation of ³³P into protein was assayed byharvesting the reaction onto phosphocellulose mats, washing away freecounts with a 1% phosphoric acid solution and quantitatingphosphorylation by liquid scintillation counting. For high throughputscreening, 10 μM ATP and 0.4 μM MEK was used. In some experiments, thekinase reaction was stopped by adding an equal amount of Laemmli samplebuffer. Samples were boiled 3 min and the proteins resolved byelectrophoresis on 7.5% Laemmli gels. Gels were fixed, dried and exposedto an imaging plate (Fuji). Phosphorylation was analyzed using a FujixBio-Imaging Analyzer System.

All compounds exemplified displayed IC₅₀s of between 1 nM and 10 μM.

Cellular Assay:

For in vitro growth assay, human tumor cell lines, including but notlimited to HCT116 and DLD-1, containing mutated K-ras genes were used instandard proliferation assays for anchorage dependent growth on plasticor anchorage independent growth in soft agar. Human tumor cell lineswere obtained from ATCC (Rockville Md.) and maintained in RPMI with 10%heat inactivated fetal bovine serum and 200 mM glutamine. Cell culturemedia and additives were obtained from Gibco/BRL (Gaithersburg, Md.)except for fetal bovine serum (JRH Biosciences, Lenexa, Kans.). In astandard proliferation assay for anchorage dependent growth, 3×10³ cellswere seeded into 96-well tissue culture plates and allowed to attachovernight at 37° C. in a 5% CO₂ incubator. Compounds were titrated inmedia in dilution series and added to 96-well cell cultures. Cells wereallowed to grow 5 days typically with a feeding of fresh compoundcontaining media on day three. Proliferation was monitored by measuringmetabolic activity with standard XTT colorimetric assay (BoehringerMannheim) measured by standard ELISA plate reader at OD 490/560, or bymeasuring ³H-thymidine incorporation into DNA following an 8 h culturewith 1 μCu ³H-thymidine, harvesting the cells onto glass fiber matsusing a cell harvester and measuring ³H-thymidine incorporation byliquid scintillant counting.

For anchorage independent cell growth, cells were plated at 1×10³ to3×10³ in 0.4% Seaplaque agarose in RPMI complete media, overlaying abottom layer containing only 0.64% agar in RPMI complete media in24-well tissue culture plates. Complete media plus dilution series ofcompounds were added to wells and incubated at 37° C. in a 5% CO₂incubator for 10-14 days with repeated feedings of fresh mediacontaining compound at 3-4 day intervals. Colony formation was monitoredand total cell mass, average colony size and number of colonies werequantitated using image capture technology and image analysis software(Image Pro Plus, media Cybernetics).

In Vivo Assay:

An in vivo assay of the inhibitory effect of the compounds on tumors(e.g., solid cancers) mediated by raf kinase can be performed asfollows:

CDI nu/nu mice (6-8 weeks old) are injected subcutaneously into theflank at 1×10⁶ cells with human colon adenocarcinoma cell line. The miceare dosed i.p., i.v. or p.o. at 10, 30, 100, or 300 mg/Kg beginning onapproximately day 10, when tumor size is between 50-100 mg. Animals aredosed for 14 consecutive days once a day; tumor size was monitored withcalipers twice a week.

The inhibitory effect of the compounds on raf kinase and therefore ontumors (e.g., solid cancers) mediated by raf kinase can further bedemonstrated in vivo according to the technique of Monia et al. (Nat.Med. 1996, 2, 668-75).

The preceding examples can be repeated with similar success bysubstituting the generically or specifically described reactants and/oroperating conditions of this invention for those used in the precedingexamples.

From the foregoing description, one skilled in the art can easilyascertain the essential characteristics of this invention and, withoutdeparting from the spirit and scope thereof, can make various changesand modifications of the invention to adapt it to various usages andconditions.

1. A compound of Formula I:A—D—B  (I) or a pharmaceutically acceptable salt thereof, wherein D is—NH—C(O)—NH—, A is a substituted moiety of the formula:—L—M—L¹, wherein L is phenyl, optionally substituted by halogen, up toper-halo, and Wn, where n is 0-3; wherein each W is independentlyselected from the group consisting of C₁-C₅ linear or branched alkyl,C₁-C₅ linear or branched haloalkyl up to perhaloalkyl and C₁-C₃ alkoxyL¹ is selected from pyridinyl substituted by —C(O)R_(x), and optionallysubstituted with 1-3 additional substituents independently selected fromthe group consisting of R⁷ and halogen; wherein R_(x) is NR_(a)R_(b) andR_(a) and R_(b) are A) independently a) hydrogen, b) C₁-C₁₀ alkyl, c) C₆aryl, d) pyridinyl e) substituted C₁₋₁₀ alkyl, f) substituted C₆ aryl,g) substituted pyridinyl h) -phenylpiperazine(pyridinyl), i)-phenylmorpholinyl, j) -ethylmorpholinyl, k) -ethylpiperidyl, l) -methylpyrrolidinyl, m) -methyl tetrahydrofuryl, or n) —C₂H₄NH(phenyl); wherewhen R_(a) and R_(b) are a substituted group, they are substituted by a)halogen up to per halo, b) hydroxy, c) —N(CH₃)₂, d) C₁-C₁₀ alkyl, e)C₁-C₁₀ alkoxy, f) halosubstituted C₁₋₆ alkyl, or g) —OSi(Pr-i)₃; or B)R_(a) and R_(b) together form piperazine or a substituted piperazinewith substituents selected from the group consisting of a) halogen, b)hydroxy, c) C₁₋₁₀ alkyl, d) pyridinyl e) C₁₋₁₀ alkoxy, f) C₆ aryl, g)halo substituted C₆ aryl, and h) N-(4-acetylphenyl); M is selected fromthe group consisting of oxygen and sulfur; and B is phenyl, substitutedwith 1-3 substituents independently selected from the group consistingof halogen and R⁷, and R⁷ is (a) C₁-C₆ linear or branched alkyl,optionally substituted with 1-3 halogen substituents; or (b) C₁-C₆linear or branched alkoxy.
 2. A compound as in claim 1 wherein M isoxygen.
 3. A compound as in claim 1 wherein the cyclic structures of Band L bound directly to D are substituted in the ortho position byhydrogen.
 4. A compound of claim 1 wherein B of Formula I is phenyl,substituted with 1-3 substituents independently selected from the groupconsisting of chlorine, C₁-C₆ alkoxy or up to per halo substituted C₁-C₆alkyl.
 5. A compound of claim 2 wherein B of Formula I is phenyl,substituted with 1-3 substituents independently selected from the groupconsisting of chlorine, C₁-C₆ alkoxy, or substituted C₁-C₆ alkyl,substituted by one or more halogen substituents.
 6. A compound of claim3 wherein B of Formula I is phenyl, substituted 1 to 3 times by 1 ormore substituents selected from the group consisting of chlorine, C₁-C₆alkoxy or up to per halo substituted C₁-C₆ alkyl.
 7. A compound of claim1, wherein L is phenyl, optionally substituted by halogen up to perhalo.8. A compound of claim 1, wherein L is phenyl, optionally substitutedwith 1-3 substituents independently selected from the group consistingof halogen and C₁-C₃ alkoxy.
 9. A compound of claim 3, wherein M is —O—.10. A compound of claim 6 wherein M is —O—.
 11. A compound of claim 7wherein M is —O—.
 12. A compound of claim 8 wherein M is —O—.
 13. Acompound of claim 1 wherein L¹ is additionally substituted 1 to 3 timesby one or more substituents selected from the group consisting of C₁-C₆alkyl, halogen and C₁-C₆ alkoxy.
 14. A compound of claim 2 wherein L¹ isadditionally substituted 1 to 3 times by one or more substituentsselected from the group consisting of C₁-C₆ alkyl, halogen and C₁-C₆alkoxy.
 15. A compound of claim 9 wherein L¹ is additionally substituted1 to 3 times by one or more substituents selected from the groupconsisting of C₁-C₆ alkyl, halogen and C₁-C₆ alkoxy.
 16. A compound ofclaim 10 wherein L¹ is additionally substituted 1 to 3 times by one ormore substituents selected from the group consisting of C₁-C₆ alkyl,halogen and C₁-C₆ alkoxy.
 17. A compound of claim 11 wherein L¹ isadditionally substituted 1 to 3 times by one or more substituentsselected from the group consisting of C₁-C₆ alkyl, halogen and C₁-C₆alkoxy.
 18. A compound of claim 12 wherein L¹ is additionallysubstituted 1 to 3 times by one or more substituents selected from thegroup consisting of C₁-C₆ alkyl, halogen and C₁-C₆ alkoxy.
 19. Acompound of claim 2 wherein R_(a) and R_(b) are independently hydrogenor C₁-C₆ alkyl.
 20. A compound of claim 9 wherein R_(a) and R_(b) areindependently hydrogen or C₁-C₆ alkyl.
 21. A compound of claim 10wherein R_(a) and R_(b) are independently hydrogen or C₁-C₆ alkyl.
 22. Acompound of claim 11 wherein R_(a) and R_(b) are independently hydrogenor C₁-C₆ alkyl.
 23. A compound of claim 12 wherein R_(a) and R_(b) areindependently hydrogen or C₁-C₆ alkyl.
 24. A compound of Formula I:A—D—B  (I) or a pharmaceutically acceptable salt thereof, wherein D is—NH—C(O)—NH—, A is of the formula: —L—M—L¹, wherein L is phenyl,optionally substituted with 1-3 substituents independently selected fromthe group consisting of C₁-C₅ linear or branched alkyl, C₁-C₅ linear orbranched haloalkyl up to perhalo, C₁-C₃ alkoxy and halogen; L¹ ispyridinyl, substituted by —C(O)R_(x); wherein R_(x) is NR_(a)R_(b) andR_(a) and R_(b) are independently hydrogen, C₁-C₁₀ alkyl, C₆ aryl,pyridinyl, substituted C₁₋₁₀ alkyl, substituted C₆ aryl, or substitutedpyridinyl, where R_(a) and R_(b) are a substituted group, they aresubstituted by halogen up to per halo; and M is selected from the groupconsisting of oxygen and sulfur and B is phenyl, substituted with 1-3substituents independently selected from the group consisting of R⁷ andhalogen; and R⁷ is (a) C₁-C₆ linear or branched alkyl, optionallysubstituted with 1-3 halogen substituents; or (b) C₁-C₆ linear orbranched alkoxy.
 25. A compound of Formula I:A—D—B  (I) or a pharmaceutically acceptable salt thereof, wherein D is—NH—C(O)—NH—, A is of the formula: —L—M—L¹, L is phenyl, M is —O—, L¹ ispyridinyl substituted by —C(O)R_(x), wherein R_(x) is NR_(a)R_(b) andR_(a) and R_(b) are independently hydrogen, C₁-C₁₀ alkyl, C₆ aryl,pyridinyl, substituted C₁₋₁₀ alkyl, substituted C₆ aryl, or substitutedpyridinyl where R_(a) and R_(b) are a substituted group, they aresubstituted by halogen up to per halo, and B is a phenyl groupsubstituted by trifluoromethyl or tert-butyl, and optionally additionalsubstituents selected from the group consisting of halogen up to perhalo, and W_(n) where n is 0-3, and each W is independently selectedfrom the group consisting of C₁-C₁₀ alkyl, C₁-C₁₀ alkoxy, C₆ aryl,pyridinyl, and substituted C₁-C₁₀ alkyl, substituted by one or moresubstituents independently selected from the group consisting of halogenup to per halo.
 26. A compound as in claim 24 wherein the cyclicstructures of B and L bound directly to D are substituted in the orthoposition by hydrogen.
 27. A compound as in claim 25 wherein the cyclicstructures of B and L bound directly to D are substituted in the orthoposition by hydrogen.
 28. A compound as in claim 24 wherein substituentsfor B, are selected from the group consisting of up to per halosubstituted C₁-C₆ alkyl and halogen.
 29. A compound as in claim 25wherein the optional substituents for B are selected from the groupconsisting of up to per halo substituted C₁-C₆ alkyl and halogen.
 30. Apharmaceutically acceptable salt of a compound of formula I of claim 1which is a) a basic salt of an organic acid or inorganic acid which ishydrochloric acid, hydrobromic acid, sulfuric acid, phosphoric acid,methanesulfonic acid, trifluoromethanesulfonic acid, benzenesulfonicacid, p-toluene sulfonic acid (tosylate salt), 1-napthalene sulfonicacid, 2-napthalene sulfonic acid, acetic acid, trifluoroacetic acid,malic acid, tartaric acid, citric acid, lactic acid, oxalic acid,succinic acid, fumaric acid, maleic acid, benzoic acid, salicylic acid,phenylacetic acid, or mandelic acid; or b) an acid salt of an organic orinorganic base containing an alkali metal cation, an alkaline earthmetal cation, an ammonium cation, an aliphatic substituted ammoniumcation or an aromatic substituted ammonium cation.
 31. Apharmaceutically acceptable salt of a compound of claim 24 which is a) abasic salt of an organic acid or inorganic acid which is hydrochloricacid, hydrobromic acid, sulfuric acid, phosphoric acid, methanesulfonicacid, trifluoromethanesulfonic acid, benzenesulfonic acid, p-toluenesulfonic acid (tosylate salt), 1-napthalene sulfonic acid, 2-napthalenesulfonic acid, acetic acid, trifluoroacetic acid, malic acid, tartaricacid, citric acid, lactic acid, oxalic acid, succinic acid, fumaricacid, maleic acid, benzoic acid, salicylic acid, phenylacetic acid, ormandelic acid; or b) an acid salt of an organic or inorganic basecontaining an alkali metal cation, an alkaline earth metal cation, anammonium cation, an aliphatic substituted ammonium cation or an aromaticsubstituted ammonium cation.
 32. A pharmaceutically acceptable salt of acompound of claim 25 which is a) a basic salt of an organic acid orinorganic acid which is hydrochloric acid, hydrobromic acid, sulfuricacid, phosphoric acid, methanesulfonic acid, trifluoromethanesulfonicacid, benzenesulfonic acid, p-toluene sulfonic acid (tosylate salt),1-napthalene sulfonic acid, 2-napthalene sulfonic acid, acetic acid,trifluoroacetic acid, malic acid, tartaric acid, citric acid, lacticacid, oxalic acid, succinic acid, fumaric acid, maleic acid, benzoicacid, salicylic acid, phenylacetic acid, or mandelic acid; or b) an acidsalt of an organic or inorganic base containing an alkali metal cation,an alkaline earth metal cation, an ammonium cation, an aliphaticsubstituted ammonium cation or an aromatic substituted ammonium cation.33. A compound of claim 1 wherein the optional substituents on L¹ areselected from the group consisting of methyl, trifluoromethyl, methoxy,Cl and F.
 34. A compound of claim 1 wherein the substituents of B and Lare independently selected from the group consisting of methyl,trifluoromethyl, tert-butyl, methoxy, Cl, and F.
 35. A compound ofFormula I:A—D—B  (I) or a pharmaceutically acceptable salt thereof, wherein D is—NH—C(O)—NH—, A is a substituted moiety of the formula: —L—M—L¹, whereinL is phenyl, optionally substituted with chlorine or methylsubstituents; L¹ is pyridinyl, substituted with —C(O)NR^(a)R^(b);wherein R^(a) and R^(b) independently are a) hydrogen b) methyl; c)ethyl; or d) propyl B is phenyl, substituted by tert-butyl ortrifluoromethyl and optionally substituted with additional substituentsindependently selected from the group consisting of a) halogen, or b)methoxy.
 36. A compound of claim 35 where L has no optionalsubstituents.
 37. A compound of claim 35 where R^(a) is hydrogen andR^(b) is methyl.
 38. A compound of claim 35 where B is substituted bytrifluoromethyl and chlorine or bromine.
 39. A compound which isN-(4-chloro-3-(trifluoromethyl)phenyl)-N′-(4-(2-(N-methylcarbamoyl)-4-pyridyloxy)phenyl)ureaof the formula X

or a pharmaceutically acceptable salt thereof.
 40. A compound of claim39 which is a pharmaceutically acceptable salt ofN-(4-chloro-3-(trifluoromethyl)phenyl)-N′-(4-(2-(N-methylcarbamoyl)-4-pyridyloxy)phenyl)ureathat is a basic salt of an organic acid or an inorganic acid which ishydrochloric acid, hydrobromic acid, sulfuric acid, phosphoric acid,methanesulfonic acid, trifluoromethanesulfonic acid, benzenesulfonicacid, p-toluene sulfonic acid (tosylate salt), 1-napthalene sulfonicacid, 2-napthalene sulfonic acid, acetic acid, trifluoroacetic acid,malic acid, tartaric acid, citric acid, lactic acid, oxalic acid,succinic acid, fumaric acid, maleic acid, benzoic acid, salicylic acid,phenylacetic acid, or mandelic acid.
 41. A compound of claim 39 which isa tosylate salt ofN-(4-chloro-3-(trifluoromethyl)phenyl)-N′-(4-(2-(N-methylcarbamoyl)-4-pyridyloxy)phenyl)urea.